Philly Cheesesteak Lasagna

1. Stage

Combine flank steak, onions, green bell peppers, and mushrooms in a large resealable plastic bag. Add Worcestershire sauce, olive oil, salt, and pepper. Seal and let marinate in the refrigerator, about 30 minutes.

2. Stage

Preheat oven to 350 degrees F (175 degrees C).

3. Stage

Place lasagna noodles in a 9x13-inch baking dish. Cover with hot water and let soak until tender, about 20 minutes. Drain in a colander. Grease baking dish with cooking spray.

4. Stage

Transfer steak to a large baking sheet. Arrange onions, green bell peppers, and mushrooms around steak. Discard marinade.

5. Stage

Bake steak in the preheated oven until starting to brown, 15 to 20 minutes. Turn on broiler; broil until steak darkens, about 5 minutes. When cool enough to handle, slice the steak into thin pieces.

6. Stage

Combine spaghetti sauce and garlic powder in a large skillet over medium-low heat. Stir in the sliced flank steak. Add onions, green bell peppers, and mushrooms. Remove from heat.

7. Stage

Mix ricotta cheese, half of the mozzarella cheese, Parmesan cheese, egg, and parsley together in a bowl.

8. Stage

Spread 2 cups of the sauce mixture in the bottom of the baking dish. Top with 4 lasagna noodles. Cover noodles with 1/3 of the ricotta mixture, 2 cups of the sauce mixture, and 1/3 of the provolone cheese. Repeat layers twice. Sprinkle remaining mozzarella cheese on top. Cover baking dish with greased aluminum foil.

9. Stage

Bake in the preheated oven until bubbling, about 45 minutes. Uncover and continue baking until mozzarella cheese is browned, about 15 minutes. Let stand for 15 minutes before cutting and serving.