Start by giving the mushrooms a good clean under running water. Gently dry them with a clean towel. Remove the stems carefully – you can use your hands or a small knife. If needed, hollow them out slightly more using a spoon.
Take a mixing bowl and add the softened cream cheese, freshly grated Parmesan, minced garlic, and breadcrumbs. Stir until everything is smooth and well combined. For a little extra flavor, toss in some chopped thyme or parsley at this stage. The filling should be creamy but not too runny.
Spoon a generous amount of the creamy filling into each mushroom cap, packing it in nicely. Arrange the stuffed mushrooms on a baking tray or in a shallow dish. Bake in a preheated oven at 375°F (190°C) for about 15–20 minutes. You’ll know it’s done when the tops turn golden, and the mushrooms are tender. The aroma? Absolutely divine.