This creamy Beef Tetrazzini Casserole is the perfect comfort food, featuring tender beef, egg noodles, and a rich, cheesy sauce. A hearty dish for family dinners, this casserole is sure to be a favorite!

Why You’ll Love This Recipe

Rich and creamy: A luscious blend of sour cream, heavy cream, and cheese.
Hearty and filling: Packed with protein-rich beef and comforting egg noodles.
Family-friendly: A crowd-pleasing dish perfect for gatherings.
Easy to make: Simple ingredients and easy preparation steps.

Ingredients Breakdown

Beef Sirloin (1 lb, thinly sliced) – Provides lean, tender cuts of beef that add a savory depth to the casserole.
Egg Noodles (12 oz) – Soft noodles that soak up the creamy sauce, offering a perfect base for the dish.
Olive Oil (2 tbsp) – Used for sautéing the beef and vegetables, adding flavor and richness.
Onion (1, finely chopped) & Garlic (3 cloves, minced) – Add savory, aromatic base flavors to the sauce.
Mushrooms (8 oz, sliced) – Enhance the dish with earthy flavor and texture.
Beef Broth (1 cup) – Adds depth of flavor and richness to the sauce.
Heavy Cream (1 cup) & Sour Cream (½ cup) – Together, they create a rich, creamy base for the sauce.
Grated Parmesan Cheese (1 cup) & Mozzarella Cheese (½ cup) – Parmesan adds sharp, nutty flavor, while mozzarella adds creamy meltiness.
All-Purpose Flour (¼ cup) – Thickens the sauce to a creamy consistency.
Butter (2 tbsp) – Adds richness to the sauce and helps cook the vegetables.
Salt & Pepper – Essential seasonings to taste and balance the flavors.
Fresh Parsley (2 tbsp, chopped) – Garnishes the casserole with a fresh, herby touch.

Tips and Tricks

Use different cuts of beef: Swap sirloin with ground beef or leftover steak.
Make it ahead: Assemble the casserole ahead of time and refrigerate until ready to bake.
Boost the flavor: Add a splash of Worcestershire sauce for a richer taste.

Variations and Customizations

Chicken Tetrazzini: Substitute beef with shredded rotisserie chicken.
Spicy version: Add red pepper flakes for heat.
Vegetable-packed: Mix in spinach or bell peppers for added nutrients.

Pairing Suggestions

Garlic Bread: Perfect for soaking up the creamy sauce.
Side Salad: A fresh green salad balances the richness.
Steamed Vegetables: Broccoli or green beans complement the dish.

Storage Instructions

Refrigerate: Store in an airtight container for up to 3 days.
Freeze: Wrap tightly and freeze for up to 2 months.
Reheat: Warm in the oven at 350°F until heated through.

Beef Tetrazzini Casserole

Author: easysweetmeal
Total Time: 50 minutes
Yield: 6 servings 1x

Print Recipe

Description

This Beef Tetrazzini Casserole is a creamy, comforting dish loaded with tender beef, sautéed mushrooms, and egg noodles, all baked together in a cheesy sauce. With a perfect balance of savory flavors and rich creaminess, this casserole is a hearty meal that’s sure to satisfy the whole family.

Ingredients

Scale

1 pound beef sirloin, thinly sliced
12 ounces egg noodles
2 tablespoons olive oil
1 onion, finely chopped
3 cloves garlic, minced
8 ounces mushrooms, sliced
1 cup beef broth
1 cup heavy cream
1/2 cup sour cream
1 cup grated Parmesan cheese
1/2 cup grated mozzarella cheese
1/4 cup all-purpose flour
2 tablespoons butter
Salt and pepper to taste
2 tablespoons fresh parsley, chopped

Instructions

Step 1: Prepare the Noodles

Preheat your oven to 350°F (175°C).
Cook the egg noodles according to the package instructions. Drain and set aside.

Step 2: Cook the Beef

Heat olive oil in a large skillet over medium-high heat.
Add the sliced beef and cook until browned. Remove from skillet and set aside.

Step 3: Make the Sauce

In the same skillet, melt the butter and sauté the onions and garlic until translucent.
Add the mushrooms and cook until tender, about 5 minutes.
Sprinkle the flour over the vegetables, stirring to combine. Cook for 1 minute.
Gradually pour in the beef broth, stirring constantly until thickened.
Reduce heat to low and mix in the heavy cream, sour cream, and half of the Parmesan cheese. Season with salt and pepper.
Return the beef to the skillet, stirring until well combined.

Step 4: Assemble and Bake

In a large mixing bowl, combine the cooked noodles with the beef and sauce mixture.
Transfer to a greased 9×13-inch baking dish.
Sprinkle the remaining Parmesan and mozzarella cheese over the top.
Bake for 25-30 minutes, until golden brown and bubbly.

Step 5: Serve

Garnish with freshly chopped parsley before serving.

Notes

This Beef Tetrazzini Casserole is the ultimate comfort dish that combines creamy, cheesy goodness with tender beef and hearty noodles. A fantastic meal for any occasion!

Prep Time: 20 minutes
Cook Time: 30 minutes
Category: Dinner
Method: Baking
Cuisine: American-Italian