Cheese Steak Tortellini Casserole
This Cheese Steak Tortellini Casserole combines tender bites of seared steak, cheese-filled tortellini, and a rich homemade cheddar sauce in one comforting baked dinner. It takes inspiration from the flavors of a classic cheesesteak while adding the satisfying texture and convenience of a cheesy pasta casserole.
The steak is quickly seared until beautifully browned, then combined with tender tortellini and a creamy sauce made with butter, garlic, milk, beef broth, sharp cheddar cheese, and a touch of paprika. A little Dijon mustard adds optional depth to the sauce, while mozzarella creates a bubbly, golden topping.
This steak tortellini casserole is hearty enough for a family dinner but simple enough to prepare on a weeknight. The combination of savory beef, creamy cheese sauce, and tender pasta makes it a satisfying homemade meal that feels special without requiring complicated techniques.
Why Everyone Loves This Cheese Steak Tortellini Casserole
- Hearty and filling: Steak and cheese-filled tortellini make this a substantial family dinner.
- Creamy homemade sauce: The cheddar sauce brings all of the ingredients together.
- Rich cheesesteak flavor: Seared steak, beef broth, garlic, and cheddar create a deeply savory combination.
- Great comfort food: The bubbling cheese and tender pasta make this an especially satisfying casserole.
- Family-friendly: The familiar combination of steak, pasta, and cheese is easy to enjoy.
- Perfect for leftovers: The casserole reheats well for another easy meal.
Ingredients Overview
Sirloin Steak or Steak Tips
Sirloin steak provides the meaty foundation of this casserole. Cutting the steak into bite-sized pieces allows it to sear quickly and distribute evenly throughout the pasta.
Olive Oil
Olive oil helps create a hot cooking surface for searing the steak and encourages good browning.
Butter
Butter forms the flavorful base of the cheese sauce and helps sauté the garlic.
Garlic
Fresh minced garlic adds savory flavor to the creamy cheddar sauce.
All-Purpose Flour
Flour helps thicken the milk and beef broth, creating a smooth sauce that coats the tortellini.
Milk
Whole milk or 2% milk creates the creamy base of the sauce.
Beef Broth
Beef broth reinforces the savory steak flavor and gives the sauce more depth than milk alone.
Sharp Cheddar Cheese
Sharp cheddar gives the sauce its bold cheesy flavor and creamy consistency.
Dijon Mustard
Dijon mustard is optional, but a small amount adds subtle tang and helps balance the richness of the cheese.
Paprika
Paprika adds gentle warmth and extra flavor to the sauce.
Cheese Tortellini
Fresh or refrigerated cheese tortellini makes the casserole hearty while adding another layer of creamy cheese flavor.
Mozzarella
Mozzarella melts beautifully over the top, creating the bubbly golden cheese layer that makes a baked casserole especially inviting.
Parsley
Fresh chopped parsley adds color and a light finishing touch.
Variations
Add Sautéed Peppers and Onions
For an even stronger cheesesteak-inspired flavor, sauté sliced bell peppers and onions before preparing the sauce. Stir them into the casserole along with the steak and tortellini.
Try Different Cheese
Instead of sharp cheddar, use a cheddar blend, provolone, Monterey Jack, or another good melting cheese.
Add Mushrooms
Sliced mushrooms can be sautéed with the garlic or cooked separately and added to the casserole for extra savory flavor.
Make It Spicier
Add a pinch of crushed red pepper flakes or use a spicier cheese blend for additional heat.
Use Different Tortellini
Cheese tortellini is ideal for this recipe, but other refrigerated tortellini varieties can be used if desired. Choose a filling that complements the steak and creamy sauce.
How to Make Cheese Steak Tortellini Casserole
1. Prepare and Sear the Steak
Preheat the oven to 375°F (190°C).
Season the bite-sized steak pieces with salt and black pepper.
Heat the olive oil in a skillet over medium-high heat. Once hot, add the steak and sear for approximately 2–3 minutes per side, or until browned.
Avoid overcrowding the skillet so the steak can brown properly rather than steam.
Once browned, remove the steak from the skillet and set it aside.
2. Make the Cheddar Sauce
Using the same skillet, melt the butter over medium heat.
Add the minced garlic and cook for approximately 30 seconds, just until fragrant.
Stir in the all-purpose flour and cook for about 1 minute. This creates the base for the sauce.
Gradually whisk in the milk and beef broth, making sure to whisk continuously to prevent lumps.
Continue cooking until the sauce begins to thicken.
3. Add the Cheese and Seasonings
Stir the shredded sharp cheddar cheese into the sauce.
Add the Dijon mustard, if using, along with the paprika.
Continue stirring until the cheese melts completely and the sauce becomes smooth and creamy.
Taste carefully and adjust the seasoning with additional salt or pepper if needed.
4. Cook the Tortellini
Cook the cheese tortellini according to the package directions, but slightly undercook it.
The pasta will continue cooking in the oven, so stopping slightly early helps prevent it from becoming too soft.
Drain the tortellini and toss it with a small amount of olive oil to prevent the pieces from sticking together.
5. Assemble the Casserole
Grease a 9×13-inch baking dish.
Add the cooked tortellini, seared steak, and creamy cheddar sauce.
Gently stir everything together until the pasta and steak are evenly coated with sauce.
Spread the mixture evenly throughout the baking dish.
6. Add the Mozzarella
Sprinkle the shredded mozzarella evenly over the top.
Try to distribute it from edge to edge so every serving gets some melted cheese.
7. Bake
Place the uncovered casserole in the preheated oven.
Bake for approximately 20–25 minutes, or until the cheese is bubbly and golden.
Keep an eye on the casserole toward the end of the baking time to prevent the cheese from becoming overly browned.
8. Garnish and Serve
Remove the casserole from the oven and allow it to rest for a few minutes.
Sprinkle chopped fresh parsley over the top before serving.
Spoon the casserole onto plates while it is warm and creamy.
Pro Tips and Cooking Secrets
Cut the steak evenly. Similar-sized pieces cook more consistently and make the casserole easier to eat.
Do not overcrowd the skillet. Give the steak enough room to sear properly. Overcrowding can cause the meat to release moisture and steam instead of browning.
Avoid overcooking the steak. It will continue cooking slightly when combined with the hot sauce and baked in the casserole.
Whisk the sauce gradually. Slowly adding the milk and beef broth while whisking helps create a smooth sauce.
Use freshly shredded cheese when possible. Freshly shredded cheddar often melts more smoothly than pre-shredded cheese.
Slightly undercook the tortellini. Since it finishes cooking in the oven, this helps maintain a tender but firm texture.
Do not skip the resting time. Letting the casserole sit for several minutes after baking allows the sauce to settle slightly.
Add parsley at the end. Fresh parsley provides a bright contrast to the rich cheese and steak.
Serving Suggestions
Serve this Cheese Steak Tortellini Casserole warm as the main course for a hearty family dinner.
A simple green salad makes a refreshing side dish and balances the richness of the creamy cheese sauce. Steamed broccoli, green beans, or roasted vegetables also pair nicely with the casserole.
For a comforting dinner spread, serve it with warm garlic bread or crusty bread for soaking up the extra cheddar sauce.
If you are preparing the casserole for a gathering, garnish it with fresh parsley just before serving. The bright green color provides an appealing contrast against the golden melted cheese.
Because this dish is already filling, lighter vegetable sides work especially well.
How to Store Cheese Steak Tortellini Casserole
Allow leftovers to cool before storing.
Transfer the casserole to an airtight container or cover the baking dish tightly with foil or plastic wrap.
Refrigerate leftovers and enjoy them within 3–4 days for the best quality.
How to Reheat
Individual portions can be reheated in the microwave until heated through.
For larger portions, place the casserole in an oven-safe dish and warm it in the oven until hot throughout. Adding a small splash of milk before reheating can help loosen the sauce if it has thickened in the refrigerator.
Can You Freeze This Casserole?
Yes, although the texture of the tortellini and creamy sauce may change slightly after freezing and thawing.
For best results, cool the casserole completely, transfer portions to freezer-safe containers, and freeze tightly covered.
Thaw overnight in the refrigerator before reheating.
Cheese Steak Tortellini Casserole FAQs
What type of steak is best for this casserole?
Sirloin steak or steak tips work well because they can be cut into bite-sized pieces and quickly seared. Choose a tender cut and avoid overcooking it.
Can I use frozen tortellini?
Yes, but follow the package directions for cooking. Slightly undercook the tortellini before assembling the casserole so it does not become too soft during baking.
Can I make this casserole with a different cheese?
Absolutely. Sharp cheddar provides a bold flavor, but provolone, Monterey Jack, or a cheddar blend can also work well.
Why did my cheese sauce become too thick?
The sauce can thicken as it cools and again while baking. If it becomes excessively thick during preparation, gradually whisk in a little more milk until it reaches a smooth, pourable consistency.
Can I add peppers and onions?
Yes. Sautéed bell peppers and onions are an excellent addition if you want to emphasize the classic cheesesteak-inspired flavors.
Cheese Steak Tortellini Casserole
Equipment
- skillet
- 9×13-inch baking dish
- whisk
- large pot For cooking the tortellini.
- colander For draining the tortellini.
Ingredients
- 1 lb sirloin steak or steak tips (cut into bite-sized pieces)
- salt & black pepper (to taste)
- 1 tbsp olive oil
- 2 tbsp butter
- 3 clove garlic (minced)
- 1 tbsp all-purpose flour
- 2 cup milk (whole milk or 2%)
- 1 cup beef broth
- 2 cup shredded sharp cheddar cheese (or golden cheddar blend)
- 1 tsp Dijon mustard (optional)
- 1 tsp paprika
- 20 oz cheese tortellini (fresh or refrigerated)
- 1/2 cup shredded mozzarella (for topping)
- 2 tbsp parsley (chopped, for garnish)
Instructions
- Preheat oven to 375°F (190°C). Season steak with salt and pepper. Heat olive oil in a skillet over medium-high heat and sear steak for 2–3 minutes per side until browned. Remove and set aside.
- In the same skillet, melt butter over medium heat. Add garlic and cook 30 seconds. Stir in flour and cook 1 minute. Gradually whisk in milk and beef broth until smooth. Stir in cheddar cheese, Dijon mustard, and paprika until creamy.
- Cook tortellini according to package directions, slightly undercooking them. Drain and toss with a small amount of olive oil to prevent sticking.
- Grease a 9×13-inch baking dish. Combine tortellini, seared steak, and cheese sauce in the dish. Stir gently to mix evenly. Sprinkle mozzarella on top.
- Bake uncovered for 20–25 minutes, until cheese is bubbly and golden. Garnish with chopped parsley before serving.
