Preheat oven 350 degrees F. Prepare mashed potatoes. Cook ground beef in a large skillet on the stove top. Add pizza seasoning as well as the peppers and onions. (I used frozen peppers and onions and then just threw them in my food processor for a hot second. I used the leftovers in a Hash Brown Breakfast Bake.)

When the ground beef is finished cooking, pour it into a rectangular baking dish and then spread the mashed potatoes on top. Sprinkle the top with cheese and the extra peppers and onions. Bake for 25 minutes and then turn up the oven to broil for 3-5 minutes until the top is lightly browned. Remove from the oven and serve!