Begin by preheating your oven to 375°F (190°C). This ensures that your mushrooms will cook evenly and the filling will be perfectly melted.
Gently clean the crimini or baby Portobello mushrooms with a damp paper towel to remove any dirt. Carefully remove the stems and set them aside, as you'll be using the caps to hold your delicious filling.
In a mixing bowl, combine the softened goat cheese and cream cheese. Use a fork or spatula to mix until smooth and creamy. Stir in the diced roasted red peppers, minced garlic, salt, and freshly cracked pepper. Mix until all ingredients are well incorporated.
Using a spoon, generously fill each mushroom cap with the cheese mixture. Press the filling down slightly to ensure it holds its shape.
In a separate bowl, combine the Panko breadcrumbs, grated Parmesan cheese, salt, and pepper. Drizzle the olive oil over the mixture and toss until the breadcrumbs are evenly coated.
Place the stuffed mushrooms on a baking sheet lined with parchment paper. Sprinkle the breadcrumb topping generously over each stuffed mushroom. Bake in the preheated oven for 20-25 minutes, or until the tops are golden brown and the mushrooms are tender.
Once baked, remove the mushrooms from the oven and let them cool for a few minutes. Serve warm as an appetizer or a delightful snack, and watch them disappear!