Shrimp Mushroom Casserole (Printable)

Creamy baked dish with tender shrimp and mushrooms in a savory sauce topped with golden breadcrumbs.

# What You Need:

→ Seafood

01 - 1 lb large shrimp, peeled and deveined

→ Vegetables

02 - 8 oz cremini or button mushrooms, sliced
03 - 1 small onion, finely chopped
04 - 2 cloves garlic, minced
05 - 2 tablespoons chopped fresh parsley

→ Dairy

06 - 1/2 cup sour cream
07 - 1/2 cup whole milk
08 - 1/2 cup shredded mozzarella cheese
09 - 1/4 cup grated Parmesan cheese
10 - 2 tablespoons unsalted butter

→ Pantry

11 - 2 tablespoons olive oil
12 - 2 tablespoons all-purpose flour
13 - 1 teaspoon paprika
14 - 1 teaspoon salt
15 - 1/2 teaspoon black pepper
16 - 1/2 teaspoon dried thyme

→ Topping

17 - 3/4 cup panko breadcrumbs
18 - 1 tablespoon melted butter

# How to Make It:

01 - Preheat the oven to 375°F. Grease a medium casserole dish with a little butter or oil.
02 - Heat the olive oil and 1 tablespoon butter in a large skillet over medium heat. Add the chopped onion and cook until softened, about 3 minutes.
03 - Stir in the mushrooms and sauté until golden, about 5 minutes. Add the garlic and cook for 1 more minute.
04 - Sprinkle the flour over the vegetables and stir well to coat. Cook for 1 minute.
05 - Gradually pour in the milk while stirring constantly to prevent lumps. Add the sour cream, paprika, salt, pepper, and thyme. Simmer until the sauce thickens, about 2-3 minutes.
06 - Stir in the shrimp and cook until just beginning to turn pink, about 2 minutes (they will finish cooking in the oven). Remove from heat.
07 - Gently fold in the mozzarella, half the Parmesan, and parsley. Pour the mixture into the prepared casserole dish.
08 - In a small bowl, combine the panko, melted butter, and remaining Parmesan. Sprinkle over the casserole.
09 - Bake uncovered for 20-25 minutes or until bubbling and golden on top.
10 - Let rest for 5 minutes before serving. Garnish with fresh parsley if desired.

# Expert Tips:

01 -
  • The creamy sauce comes together faster than you might expect, no fancy techniques required
  • Leftovers actually taste better the next day, making it perfect for meal prep
02 -
  • Overcooking the shrimp before baking makes them rubbery and tough, so watch carefully during that initial 2 minute cook time
  • The sauce might seem thin when you pour it into the dish but it will thicken beautifully as it bakes
03 -
  • Grate your own Parmesan from a wedge instead of using pre-grated cheese for better melting and flavor
  • A splash of dry white wine in the sauce adds another layer of sophistication