Ingredients
Vegetables
- 1 large green bell pepper
- 1 large yellow bell pepper
- 1 large red bell pepper
- 1 small onion, thinly sliced (about ½ cup)
- 3 cloves garlic, minced
- 8 ounces cremini mushrooms, thinly sliced
Dairy & Meat
- 2 tablespoons salted butter
- 1 ½ pounds deli-style roast beef, thinly sliced
- 6 slices provolone cheese (about 6 ounces)
- 1 cup shredded mozzarella cheese
Instructions
- Prepare the peppers: Cut the tops off the green, yellow, and red bell peppers, remove the ribs and seeds, then thinly slice the peppers. Set aside for cooking.
- Sauté onions and garlic: Heat 2 tablespoons of salted butter in a large deep-sided ovenproof skillet or Dutch oven over medium-low heat. Add the thinly sliced onion and minced garlic, cook until the onion becomes translucent and the garlic is fragrant, approximately 7 minutes.
- Cook vegetables: Add the sliced mushrooms and prepared bell peppers to the skillet. Cook the mixture until the mushrooms release their liquid and the peppers become crisp-tender, about 10 minutes.
- Preheat oven: While the vegetables cook, preheat your oven to 350°F (175°C).
- Combine roast beef and vegetables: Add the thinly sliced deli-style roast beef into the skillet with the sautéed vegetables. Stir to combine and taste; season with salt and pepper if needed.
- Add cheese toppings: Layer the 6 slices of provolone cheese evenly over the roast beef and vegetable mixture. Then sprinkle the shredded mozzarella cheese uniformly on top.
- Bake and broil: Place the skillet in the preheated oven and bake for 15 minutes. After baking, switch the oven to broil and cook for an additional 2 to 3 minutes, or until the cheese is browned and bubbling.
Notes
- For a spicier twist, add sliced jalapeños or red pepper flakes with the vegetables.
- Use a well-seasoned cast iron skillet for best results and oven safety.
- Ensure to thinly slice the roast beef to allow it to warm through evenly.
- Leftovers can be stored in an airtight container in the refrigerator for up to 3 days.
- Reheat in the oven or microwave until warmed through before serving.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Category: Casserole
- Method: Baking
- Cuisine: American
- Diet: Gluten Free
