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–+ servings

Cheesesteak Casserole

All the bold, savory flavor of a classic Philly cheesesteak baked into one creamy, cheesy, crowd-feeding casserole. Easy to prep, budget-friendly, and perfect for make-ahead dinners or freezer meals.
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Prep Time 20 minutes
Cook Time 25 minutes
Course casserole
Cuisine American
Servings 12 servings

Equipment

9x13-inch baking dish

Ingredients
 
 

Meat & Veggies

  • 2 lbs ground beef or thin-sliced steak if you’re feelin’ fancy
  • 1 large onion sliced
  • 2 bell peppers sliced (any color)
  • 8 oz mushrooms sliced (optional but recommended for that diner vibe)
  • 3 cloves garlic minced

Base & Sauce

Cheesy Goodness

  • 2 cups shredded mozzarella
  • 6 –8 slices provolone cheese the real MVP here

Optional Add-Ins (choose your adventure)

  • 2 cups cooked pasta penne or rotini
  • OR 3 cups diced roasted potatoes
  • OR keep it low-carb and skip both

Instructions
 

  • Preheat & Prep
  • Preheat oven to 375°F. Lightly grease a 9×13 casserole dish.
  • Cook the Filling
  • In a large skillet, cook ground beef over medium heat until browned. Drain excess grease if needed.
  • Add Veggies
  • Toss in onions, peppers, mushrooms, and garlic. Cook until softened and just a little caramelized—about 6–8 minutes.
  • Make it Creamy
  • Lower heat and stir in cream cheese until melted.
  • Add sour cream, beef broth, Worcestershire, salt, and pepper. Stir until smooth and rich.
  • Build the Casserole
  • If using pasta or potatoes, spread them in the bottom of your dish.
  • Pour the beef mixture over top and spread evenly.
  • Cheese Layer (don’t skimp)
  • Sprinkle mozzarella over everything, then lay provolone slices across the top like a cozy blanket.
  • Bake
  • Bake uncovered for 20–25 minutes, until bubbly and golden.
  • Rest (important!)
  • Let it sit 5–10 minutes before serving so it sets up nicely.

Notes

Freezer-friendly: Assemble, cover tight, freeze. Bake straight from frozen at 350°F ~45–55 minutes.
Make it stretch: Add extra peppers + mushrooms = more servings, less cost.
Sandwich vibes: Scoop leftovers onto toasted hoagie rolls the next day 👀
Bulk prep: Double the meat base and freeze half for a second meal later.
🍽️ Serving Ideas
Garlic bread or hoagie rolls
Simple side salad
Or just a fork and zero regrets