I made this Slow Cooker Corn Casserole Recipe for the first time last Thanksgiving, and I was honestly shocked at how little effort it took. I stirred everything in one bowl, poured it into the pot, and walked away for the day. The result was sweet, buttery, and so creamy that my family scraped the dish clean.

It also freed up my oven for the turkey, which is a huge win. Whether you love a Jiffy crockpot corn casserole or have searched for a pioneer woman crockpot corn casserole, I promise this easy crockpot version belongs on your table. For another cozy casserole that makes holiday leftovers shine, try my turkey stuffing casserole too.

Cooking Time

Here is how long this recipe takes from start to finish. The hands-on work is tiny, and the slow cooker does the rest.

Prep Time: 10 minutes
Cooking Time: 6 to 7 hours on LOW
Total Time: About 6 hours 10 minutes to 7 hours 10 minutes

Ingredients

This list is short and budget-friendly. Most of it comes straight from your pantry, which makes this one of my favorite slow cooker corn recipes.

2 boxes (8.5 oz each) corn muffin mix: Jiffy works great, and it gives the casserole its tender, cake-like crumb.
2 cans (14.75 oz each) cream-style sweet corn, undrained: Keep the liquid, since it makes the casserole creamy.
2 cans (15 oz each) whole kernel sweet corn, drained: Drain very well to avoid a runny center.
¼ cup (½ stick) salted butter, melted: Adds richness, so let it cool slightly before mixing.
2 eggs, beaten: They bind everything and keep the texture moist.
1 cup (8 oz) sour cream: Choose full fat for the best creamy, tangy flavor.
Nonstick cooking spray: Coat the slow cooker well so the edges release easily.

Note: serves several

Equipment You Need

You don’t need fancy gear for this recipe. Here is what I keep within reach.

Large mixing bowl: Holds the batter while you stir everything together.
Slow cooker (oval or casserole style): Cooks the casserole gently and evenly.
Spatula or wooden spoon: Folds the ingredients without overmixing.
Nonstick cooking spray: Keeps the casserole from sticking.
Paper towels: Catch steam under the lid so water doesn’t drip onto the top.
Slow cooker liner (optional): Makes cleanup a breeze.

How to Make Slow Cooker Corn Casserole Recipe?

This recipe is as simple as dump, stir, and wait. I have made it many times, and the steps never change. Follow each one below and you will get a creamy, golden casserole. Plan around the long cooking time and you will be set.

Gather and Prep Your Ingredients

Set out the muffin mix, canned corn, butter, eggs, and sour cream before you start. Melt the butter and beat the eggs in a small bowl. Having everything ready makes the mixing take only a minute or two.

Drain the Whole Kernel Corn

Open the two cans of whole kernel corn and pour them into a colander. Let them drain well, and give them a gentle shake. Do not drain the cream-style corn, since its liquid keeps the casserole soft and creamy.

Mix the Batter

In a large bowl, combine the muffin mix, both types of corn, melted butter, eggs, and sour cream. Stir just until everything is blended. A few small lumps are fine, and overmixing can make the casserole dense.

Prepare the Slow Cooker

Spray the inside of your slow cooker generously with nonstick spray. Get the bottom and the sides, because the edges tend to stick. A liner works well here if you want easier cleanup later.

Pour and Cover with Paper Towels

Pour the batter into the slow cooker and smooth the top with a spatula. Lay two paper towels across the opening, then set the lid on top. They soak up condensation, so no water drips onto your casserole.

Cook on Low

Cook on LOW for 6 to 7 hours. I never use the HIGH setting, because the edges can burn before the middle sets. Slow and steady gives you an even, creamy result.

Check for Doneness and Serve

The casserole is ready when the center is set and no longer jiggly. Remove the lid and towels carefully, and let it sit a few minutes. Spoon it out while warm and enjoy.

Additional Tips for Making This Recipe Better

After making this casserole many times, I have picked up a few tricks that really help.

I always tuck two paper towels under the lid. It’s the best trick I know for keeping the top from getting soggy.
I drain the whole kernel corn in a colander and press lightly. Excess liquid is the number one reason I have seen this turn out runny.
I stir only until the batter comes together. When I mixed longer, the casserole turned out denser.
I use an oval, ceramic slow cooker when I can. It heats more evenly than a tall metal pot in my experience.
I switch to the warm setting if dinner runs late. It holds beautifully for up to 2 hours.
I double the batch for big gatherings, but I never fill the pot more than about three-quarters full. I also start checking at the original time and add 30 minutes at a time as needed.

Common Mistakes to Avoid

These are the slip-ups I have made or seen most often with this dish.

Skipping the paper towels: I once left them out, and water dripped onto the top. Always place them under the lid.
Not draining the whole kernel corn: Too much liquid left my casserole soupy. Drain it very well before mixing.
Cooking on HIGH: I burned the edges that way while the middle stayed wet. Stick with LOW for 6 to 7 hours.
Overmixing the batter: It turned heavy and dense for me. Stir only until combined.
Peeking too often: Every time I lifted the lid, heat escaped and it cooked slower. Wait until the last hour to check.

How to Serve Slow Cooker Corn Casserole?

This casserole looks lovely on a holiday table and tastes even better. A little presentation makes it feel special.

Spoon it into a warm serving dish, or serve straight from the slow cooker set on warm.
Sprinkle chopped fresh parsley or chives on top for a pop of green.
Add a pat of butter on each portion so it melts into the golden top.
Serve it next to turkey, ham, or roast chicken for a classic holiday plate.
Pair it with a cheesy dish, like my turkey shepherd pie with a cheesy potato top, for a super comforting dinner turkey shepherd pie recipe
Offer a small bowl of extra sour cream on the side for guests who love it tangy.

Variations

Once you master the base, it’s easy to customize this casserole. Here are my favorite ways to change it up.

Cheesy version: Stir in 1 cup shredded cheddar or pepper jack for a gooey, savory twist.
Spicy kick: Add diced jalapeños or green chiles for gentle heat.
Crockpot corn casserole with cream cheese: Swap the sour cream for softened cream cheese for a richer texture. You can also use 4 oz cream cheese plus ½ cup sour cream.
Crockpot corn casserole with frozen corn: Use frozen or fresh kernels instead of canned. Thaw frozen corn and pat it dry first.
Dessert-style: Add ½ cup brown sugar and 1 tsp cinnamon for a sweeter, pudding-like dish.
Oven-baked: Pour the batter into a greased 9×13 dish and bake at 350°F for 45 to 55 minutes.
Without Jiffy: Any 8.5 oz corn muffin mix will work in place of Jiffy.

Nutritional Information

Here is an approximate breakdown for one serving, based on 8 servings. Numbers will vary with the brands you use.

Calories: 572 kcal
Protein: 13 g
Carbohydrates: 86 g
Fat: 23 g

Make Ahead and Storage

Make Ahead

You can mix the batter the night before and keep the slow cooker insert in the fridge. On the day of cooking, add about 30 minutes to the cook time. This makes holiday mornings much calmer.

Refrigerating

Cool the leftovers and store them in an airtight container in the fridge. They stay fresh for 3 to 4 days. Keep them covered so they don’t dry out.

Freezing

Let the casserole cool completely, then freeze it in a freezer-safe container for up to 3 months. Thaw it overnight in the refrigerator. Reheat it covered at 350°F until hot.

Reheating

Microwave single portions in 60-second bursts, stirring in between. For a larger amount, cover with foil and warm it at 350°F for 15 to 20 minutes. It comes out creamy again.

Why You’ll Love This Recipe?

Here is why this dish keeps earning a spot on my holiday menu.

Super easy: You only need one bowl and about 10 minutes of prep. The slow cooker does everything else, so you are free to focus on the rest of the meal.
Saves oven space: Holiday ovens fill up fast. Cooking this casserole in the crockpot keeps the oven open for your main dish.
Budget-friendly: It uses simple pantry staples and costs roughly 51 cents per serving. It feeds a crowd without stretching your wallet.
Easy to customize: Add cheese, jalapeños, cream cheese, or even a sweet twist. It adapts to whatever your family likes best.
Great for make-ahead: You can prep the batter the night before. Dinner day stays stress-free.

FAQs

What is the difference between corn casserole and corn pudding?

Corn casserole is also called cream corn casserole or corn souffle, and it uses muffin mix. Corn pudding uses cornmeal as its main ingredient and has no added sugar or butter.

Why is my slow cooker corn casserole runny?

The usual cause is too much moisture from the whole kernel corn. Drain it well, and use paper towels under the lid.

Do I need eggs in this recipe?

Yes. The eggs bind the casserole and keep it moist during the long cook.

Can I double or triple this recipe?

Yes. Scale every ingredient evenly, including the butter, and fill the slow cooker no more than three-quarters full. Check for doneness at the original time, then add 30-minute increments.

Can I use frozen corn instead of canned?

Yes. Fresh or frozen kernels work, and you need about 1½ cups of fresh corn for each 15 oz can of drained corn. Thaw and dry frozen corn first.

Ash Tyrrell

Slow Cooker Corn Casserole Recipe

I made this slow cooker corn casserole for the first time last Thanksgiving, and I was honestly shocked at how little effort it took. I stirred everything in one bowl, poured it into the pot, and walked away for the day. The result was sweet, buttery, and so creamy that my family scraped the dish clean. It also freed up my oven for the turkey, which is a huge win.

Print Recipe Pin Recipe

Total Time 6 10

Ingredients Method Notes

Ingredients

2 boxes 8.5 oz each corn muffin mix: Jiffy works great, and it gives the casserole its tender, cake-like crumb.
2 cans 14.75 oz each cream-style sweet corn, undrained: Keep the liquid, since it makes the casserole creamy.
2 cans 15 oz each whole kernel sweet corn, drained: Drain very well to avoid a runny center.
¼ cup ½ stick salted butter, melted: Adds richness, so let it cool slightly before mixing.
2 eggs beaten: They bind everything and keep the texture moist.
1 cup 8 oz sour cream: Choose full fat for the best creamy, tangy flavor.
Nonstick cooking spray: Coat the slow cooker well so the edges release easily.

Method

Set out the muffin mix, canned corn, butter, eggs, and sour cream before you start. Melt the butter and beat the eggs in a small bowl. Having everything ready makes the mixing take only a minute or two.
Open the two cans of whole kernel corn and pour them into a colander. Let them drain well, and give them a gentle shake. Do not drain the cream-style corn, since its liquid keeps the casserole soft and creamy.
In a large bowl, combine the muffin mix, both types of corn, melted butter, eggs, and sour cream. Stir just until everything is blended. A few small lumps are fine, and overmixing can make the casserole dense.
Spray the inside of your slow cooker generously with nonstick spray. Get the bottom and the sides, because the edges tend to stick. A liner works well here if you want easier cleanup later.
Pour the batter into the slow cooker and smooth the top with a spatula. Lay two paper towels across the opening, then set the lid on top. They soak up condensation, so no water drips onto your casserole.
Cook on LOW for 6 to 7 hours. I never use the HIGH setting, because the edges can burn before the middle sets. Slow and steady gives you an even, creamy result.
The casserole is ready when the center is set and no longer jiggly. Remove the lid and towels carefully, and let it sit a few minutes. Spoon it out while warm and enjoy.

Notes

I always tuck two paper towels under the lid. It’s the best trick I know for keeping the top from getting soggy.
I drain the whole kernel corn in a colander and press lightly. Excess liquid is the number one reason I have seen this turn out runny.
I stir only until the batter comes together. When I mixed longer, the casserole turned out denser.
I use an oval, ceramic slow cooker when I can. It heats more evenly than a tall metal pot in my experience.
I switch to the warm setting if dinner runs late. It holds beautifully for up to 2 hours.
I double the batch for big gatherings, but I never fill the pot more than about three-quarters full. I also start checking at the original time and add 30 minutes at a time as needed.