Philly Cheesesteak Casserole

Name: Philly Cheesesteak Casserole
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Cuisine: American
Ingredients: 2 tablespoons olive oil; 1 onion (diced); 1 green pepper (diced); 8 ounces sliced mushrooms; kosher salt, pepper, steak seasoning blend; 2 pounds steak of choice (I used strip steak) (cut into small, bite size pieces); 6 to 8 cloves garlic (minced); 3 tablespoons Worcestershire sauce; 1 10.5 ounce can cream of mushroom soup; 8 ounces sour cream; 2 cups shredded mozzarella or provolone cheese; 45 buttery crackers (like Ritz crackers); 2 tablespoons melted butter