Cut a 1 pound ball of pizza dough in half and roll out two large discs of dough.
3. Step
Spray the inside of a springform pan with cooking spray and lay in one of the dough discs. Press the dough into the corners.
4. Step
Sprinkle the olive oil, 2 cloves of the minced garlic, salt, and pepper on the dough and brush to cover the surface. Press the bottom of the dough with a fork.
5. Step
Bake until the dough is cooked and lightly golden brown, 15 minutes.
6. Step
Mix together the tomato puree, dried basil, 4 cloves of minced garlic, dried oregano, and tomato paste in a bowl. Season to taste with salt and pepper.
7. Step
Into the partially cooked bottom layer of pizza dough, shingle a layer of mozzarella slices and then a layer of the homemade marinara sauce.
8. Step
Spiral the meatballs in the dish as tightly as possible. Cover with more marinara sauce.
9. Step
Add a layer of caramelized onions, and more sliced mozzarella.
10. Step
Add the green, yellow, and orange bell peppers on top of the mozzarella.
11. Step
Cut the second piece of dough into strips to form into a lattice pattern on top of the pie.
12. Step
Brush with 2 tablespoons more of olive oil, 2 cloves minced garlic, and kosher salt.
13. Step
Bake for 40 minutes to an hour, or until the dough on top is browned and the sauce, meatballs, and cheese are heated through.
14. Step
Slice the pie, serve with extra marinara sauce and grated parmesan.
