Cook the ground beef and drain the excess grease. Combine the cooked beef with the marinara sauce and spread into the bottom of a greased 7x11 casserole dish.
Top the meat with about 1 cup of shredded mozzarella cheese, and your favorite pizza toppings.
For the top "crust" layer, combine the mozzarella cheese with the cream cheese in a medium microwave safe bowl. Heat in the microwave on 30 second intervals until the 2 cheeses are melted and combine easily. Then, add in the almond meal, baking powder, garlic powder and egg.
Spread this mixture on top of the cheese and toppings in your dish. I find it easiest to place the dough in even clumps on the top of the dish and them smoosh them together using my hands until the entire casserole is covered.
Cover the pan with foil and bake for about 30 minutes. Remove the foil and bake and additional 10 minutes, or until the top is browned.
For the butter topping: Combine the melted butter with the garlic powder, onion powder and parsley and brush on top of the "crust."