I made this Blueberry Pie Donut Bars Recipe on a slow weekend morning and I haven’t stopped thinking about them since. They come out pillowy soft on the inside with a golden, slightly chewy outside, and once you bite in and hit that warm blueberry filling, you’ll understand the hype.

I finish mine with a silky glaze and a few buttery crumbles on top because I can never leave a good donut alone. This one takes a little patience with the dough, but every single step is simple, and I promise it’s worth it. Once you taste that first warm bite, you’ll want to make these on repeat too.

Cooking Time

Prep Time: 40 minutes
Cooking Time: 15 minutes (frying)
Total Time: 2 hours 45 minutes (includes rising and proofing time)

Ingredients You’ll Need

Whole milk (1 cup, warmed to about 110F) – this wakes up the yeast, so it needs to feel warm, not hot
Granulated sugar (1/3 cup) – feeds the yeast and sweetens the dough and the blueberry filling
Active dry yeast (2 1/4 teaspoons) – gives the bars that pillowy, airy rise, so make sure it’s fresh
Greek yogurt or sour cream (1/4 cup) – keeps the dough soft and tender all the way through
Salted butter (4 tablespoons, melted, divided) – adds richness to the dough and depth to the glaze
Eggs (2 large, room temperature) – gives the dough structure so the bars hold their shape while frying
Vanilla bean paste or extract (1 teaspoon for dough, 1 teaspoon for glaze) – rounds out the flavor in every layer
Bread flour (3 1/2 cups) – builds a chewier texture that holds up well in the fryer, though all-purpose works too
Salt (3/4 teaspoon) – balances the sweetness so the dough doesn’t taste flat
Fresh or frozen blueberries (2 cups) – the heart of the filling, no need to thaw if frozen
Lemon juice (1 tablespoon) – brightens the blueberry compote and keeps it from tasting one-note
Cornstarch (1 tablespoon) – thickens the compote so it stays put inside the bars instead of leaking out
Powdered sugar (2 cups) – forms the base of the smooth glaze that coats each bar
Neutral oil for frying (about 4 cups) – choose something with a high smoke point like avocado or vegetable oil
Whipped buttercream and shortbread crumbles (optional, for topping) – purely for extra texture and looks

Note: This recipe makes about 9 donut bars, serving 9.

Equipment You Need

Stand mixer with dough hook – kneads the dough evenly without wearing out your arms
Large heavy-bottomed pot or Dutch oven – holds steady oil temperature for frying
Kitchen thermometer – keeps the oil in the right range so bars fry evenly
Small saucepan – for cooking down the blueberry compote
Piping bag – for filling the bars with compote and topping them with buttercream
Parchment paper – helps you lower shaped bars into hot oil without losing their shape
Baking sheet – for proofing the shaped bars before frying

How to Make Blueberry Pie Donut Bars?

This part looks long, but it really just breaks down into a few calm stages: mix, rise, fill, fry, and glaze. I like to prep my compote while the dough rises so nothing feels rushed. Read through each step once before you start so you know what’s coming next.

Activate the Yeast

Whisk the warm milk, sugar, and yeast together in a bowl and let it sit for about five minutes. You’re looking for a foamy, bubbly top, which tells you the yeast is alive and ready to work. If nothing happens after ten minutes, your milk was likely too hot or too cold, so start over.

Mix the Dough

Add the yogurt, melted butter, eggs, vanilla, flour, and salt to the yeast mixture and mix on low with a dough hook for one minute. Let it rest for five minutes so the flour can soak up the liquid, then knead on medium for about six minutes until the dough is smooth and only slightly sticky.

Let the Dough Rise

Place the dough in a lightly greased bowl, cover it, and set it somewhere warm for about an hour to ninety minutes. It should double in size before you move on. Rushing this step is the easiest way to end up with dense bars later.

Make the Blueberry Compote

While the dough rises, simmer the blueberries, sugar, and lemon juice in a saucepan over medium heat, stirring occasionally. Once the berries break down, stir in the cornstarch mixed with a splash of water and cook until thickened. Cool it completely before filling the bars.

Shape and Cut the Bars

Roll the risen dough into a large rectangle about half an inch thick, then cut it into even three-inch squares. Place each square on its own parchment paper square so it’s easy to lift later without deflating it.

Let the Bars Proof Again

Cover the cut bars loosely and let them proof for thirty to forty-five minutes until visibly puffy. This second rise is what gives the bars their soft, cloud-like interior once fried.

Fry Until Golden

Heat your oil to between 350F and 365F, then lower two or three bars at a time into the pot using their parchment squares. Fry for about a minute and a half per side until deeply golden, then transfer to a wire rack to cool slightly.

Make the Vanilla Glaze

Whisk together powdered sugar, melted butter, vanilla, and a little warm milk until smooth and pourable. If it thickens while you work, a quick ten seconds in the microwave brings it right back.

Fill, Glaze, and Top

Once the bars are just warm to the touch, pipe the cooled blueberry compote into the center of each one until it slightly puffs. Dip the tops in glaze, then finish with whipped buttercream and shortbread crumbles if you’re using them.

Additional Tips for Making This Recipe Better

I always check my yeast is truly foamy before moving on, because a flat mixture means the whole batch won’t rise properly.
I let my dough go the full rise time even when I’m impatient, since a rushed rise gives me flatter, denser bars.
I chill my compote in a shallow dish instead of a deep bowl, which cools it down much faster.
I keep my oil temperature steady by frying only two or three bars at once instead of crowding the pot.
I glaze the bars while they’re just warm, never hot, so the glaze sets instead of sliding right off.

Common Mistakes to Avoid

I’ve killed yeast before by using milk that was too hot, so now I always double check it feels warm, not steaming.
I used to add too much flour when the dough felt sticky, which made my bars dry and heavy instead of soft.
I once filled the bars while the compote was still warm, and it turned into a runny mess instead of a filling.
I’ve skipped the second proof when I was short on time, and the bars came out dense instead of pillowy.
I’ve fried at too high a heat before, which browned the outside before the inside had a chance to cook through.

How to Serve Blueberry Pie Donut Bars?

I like serving these while they’re still a little warm, stacked on a plate with the glaze glistening on top. A light dusting of powdered sugar right before serving makes them look extra special for brunch. If I’m setting up a spread, I’ll add a small bowl of extra blueberry compote on the side for dipping.

A hot cup of coffee or a glass of cold milk next to the plate rounds the whole thing out perfectly. You can also enjoy similar sweet and savory flavors alongside the spread with spicy maple roast carrots with crispy chickpeas and yogurt sauce. You can also enjoy similar tropical flavors with mango coconut rice.

Variations

Swap the blueberries for raspberries or a mixed berry blend for a different fruity filling.
Use dairy-free milk, yogurt, and butter to make the entire recipe dairy-free without losing the soft texture.
Cut back the sugar in the compote and glaze for a lighter, less sweet version.
Add a pinch of cinnamon or nutmeg to the dough for a cozy, spiced twist.
Skip the frying and bake the shaped bars at 375F for about fifteen minutes for an oven-baked version.

Nutritional Information

Here’s a general idea of what one donut bar looks like nutritionally, though this will shift depending on your exact ingredients and toppings.

Calories: around 320 per bar
Protein: around 5 grams per bar
Carbohydrates: around 48 grams per bar
Fat: around 12 grams per bar

Make Ahead and Storage

These bars taste best served fresh and warm the same day, since the exterior is at its chewiest and the glaze looks its glossiest right after dipping.

At room temperature, covered bars hold up well for about a day before the outside starts to soften.

In the refrigerator, store leftovers in an airtight container for up to two days, though the glaze may lose some of its shine.

To reheat, warm a bar in the microwave for twenty to thirty seconds to bring back that soft, fresh texture.

For the freezer, keep unglazed and unfilled bars in a freezer-safe bag for up to two months, then thaw overnight, warm in the oven, and glaze and fill fresh before serving.

You can also make the compote up to a week ahead, or prep the dough the night before and let it rise slowly in the fridge overnight.

Why You’ll Love This Recipe

There’s a lot to love about these donut bars, and it’s not just the blueberry filling.

Soft, pillowy texture: The inside stays light and tender while the outside gets that perfect golden, slightly chewy bite.
Make-ahead friendly: Both the dough and the compote can be prepped in advance, which makes the actual frying day much easier.
Customizable: You can swap the fruit, adjust the sweetness, or skip the frying altogether for a baked version.
Bakery-style at home: Between the glaze, buttercream, and crumbles, these taste like something from a donut shop, made in your own kitchen.
Great for sharing: They’re easy to make in a batch, so they’re perfect for brunch gatherings or weekend treats.

FAQs

Is this the same as a donut bars recipe you’d find elsewhere?

It follows the same basic donut bars recipe idea, just filled with a homemade blueberry compote and topped with a vanilla glaze for a pie-inspired twist.

How is this different from blueberry crumble cheesecake bars?

Blueberry crumble cheesecake bars are baked with a creamy cheesecake layer, while these are fried, yeasted, and filled with fruit compote instead.

Can I turn this into a maple buttermilk donut instead?

Yes, swap the milk for buttermilk and use a maple glaze instead of the vanilla one for a completely different flavor direction.

Do you have other donut recipes like this one?

Yes, there are several other well made by kiley donuts recipes worth trying if you love this style of fried, filled donut.

Is there a similar well made by kiley blueberry recipe?

Yes, there’s also a blueberry crumpet recipe with the same homemade blueberry compote used in this one.

Do you have a well made by kiley pumpkin donuts recipe too?

Yes, a pumpkin version exists for fall, using the same fried donut base with warm pumpkin spice flavors instead.

Can I use a maple vanilla bean glaze instead of the classic vanilla glaze?

Absolutely, just whisk a tablespoon of maple syrup into the vanilla bean glaze for a warmer, cozier finish.

Ash Tyrrell

Blueberry Pie Donut Bars Recipe

I made these blueberry pie donut bars on a slow weekend morning and I haven't stopped thinking about them since. They come out pillowy soft on the inside with a golden, slightly chewy outside, and once you bite in and hit that warm blueberry filling, you'll understand the hype.

Print Recipe Pin Recipe

Prep Time 40

Cook Time 15

Servings: 9

Ingredients Method Notes

Ingredients

Whole milk 1 cup, warmed to about 110F – this wakes up the yeast, so it needs to feel warm, not hot
Granulated sugar 1/3 cup – feeds the yeast and sweetens the dough and the blueberry filling
Active dry yeast 2 1/4 teaspoons – gives the bars that pillowy, airy rise, so make sure it’s fresh
Greek yogurt or sour cream 1/4 cup – keeps the dough soft and tender all the way through
Salted butter 4 tablespoons, melted, divided – adds richness to the dough and depth to the glaze
Eggs 2 large, room temperature – gives the dough structure so the bars hold their shape while frying
Vanilla bean paste or extract 1 teaspoon for dough, 1 teaspoon for glaze – rounds out the flavor in every layer
Bread flour 3 1/2 cups – builds a chewier texture that holds up well in the fryer, though all-purpose works too
Salt 3/4 teaspoon – balances the sweetness so the dough doesn’t taste flat
Fresh or frozen blueberries 2 cups – the heart of the filling, no need to thaw if frozen
Lemon juice 1 tablespoon – brightens the blueberry compote and keeps it from tasting one-note
Cornstarch 1 tablespoon – thickens the compote so it stays put inside the bars instead of leaking out
Powdered sugar 2 cups – forms the base of the smooth glaze that coats each bar
Neutral oil for frying about 4 cups – choose something with a high smoke point like avocado or vegetable oil
Whipped buttercream and shortbread crumbles optional, for topping – purely for extra texture and looks

Method

Whisk the warm milk, sugar, and yeast together in a bowl and let it sit for about five minutes. You’re looking for a foamy, bubbly top, which tells you the yeast is alive and ready to work. If nothing happens after ten minutes, your milk was likely too hot or too cold, so start over.
Add the yogurt, melted butter, eggs, vanilla, flour, and salt to the yeast mixture and mix on low with a dough hook for one minute. Let it rest for five minutes so the flour can soak up the liquid, then knead on medium for about six minutes until the dough is smooth and only slightly sticky.
Place the dough in a lightly greased bowl, cover it, and set it somewhere warm for about an hour to ninety minutes. It should double in size before you move on. Rushing this step is the easiest way to end up with dense bars later.
While the dough rises, simmer the blueberries, sugar, and lemon juice in a saucepan over medium heat, stirring occasionally. Once the berries break down, stir in the cornstarch mixed with a splash of water and cook until thickened. Cool it completely before filling the bars.
Roll the risen dough into a large rectangle about half an inch thick, then cut it into even three-inch squares. Place each square on its own parchment paper square so it’s easy to lift later without deflating it.
Cover the cut bars loosely and let them proof for thirty to forty-five minutes until visibly puffy. This second rise is what gives the bars their soft, cloud-like interior once fried.
Heat your oil to between 350F and 365F, then lower two or three bars at a time into the pot using their parchment squares. Fry for about a minute and a half per side until deeply golden, then transfer to a wire rack to cool slightly.
Whisk together powdered sugar, melted butter, vanilla, and a little warm milk until smooth and pourable. If it thickens while you work, a quick ten seconds in the microwave brings it right back.
Once the bars are just warm to the touch, pipe the cooled blueberry compote into the center of each one until it slightly puffs. Dip the tops in glaze, then finish with whipped buttercream and shortbread crumbles if you’re using them.

Notes

I always check my yeast is truly foamy before moving on, because a flat mixture means the whole batch won’t rise properly.
I let my dough go the full rise time even when I’m impatient, since a rushed rise gives me flatter, denser bars.
I chill my compote in a shallow dish instead of a deep bowl, which cools it down much faster.
I keep my oil temperature steady by frying only two or three bars at once instead of crowding the pot.
I glaze the bars while they’re just warm, never hot, so the glaze sets instead of sliding right off.