01 -
In a large mixing bowl, combine the ground beef, Italian sausage, egg, Italian seasoning, breadcrumbs, and salt. Mix everything together gently until just combined, then shape the mixture into 6 even patties.
02 -
Get your grill heated up to medium heat, around 350-375°F. If you're using an indoor grill pan, heat that up too.
03 -
Heat olive oil in a skillet over medium heat. Toss in the sliced peppers and onions with a pinch of salt, and sauté them until they're nice and soft with golden edges. Move them to a plate, then add the mushrooms to the same pan and cook until they're tender.
04 -
Place your burger patties on the grill and cook for about 4 minutes on the first side.
05 -
Flip those burgers over, then immediately top each one with a slice of mozzarella cheese. Grill for another 4 minutes until the cheese melts and the burgers are cooked through.
06 -
Place each burger on the bottom half of a bun. Spoon some pizza sauce over the burger, add 4 pepperoni slices, then pile on your sautéed vegetables.
07 -
Top with fresh basil leaves and an extra drizzle of pizza sauce if you'd like, then cap it off with the top bun and serve while everything's hot and melty.