The Dough:

1 packet active dry yeast(1/4 oz or 2 1/4 tsp)
1 cup warm water
3 cups all-purpose flour
1 TBSP cooking oil plus a little extra
1/2 tsp salt

The Marinara Sauce:

2 tsp olive oil
1/2 yellow onion, chopped
1 clove garlic, peeled and chopped
14 ounce can whole peeled tomatoes
1 tsp dry oregano
1/2 tsp dry basil
1/2 tsp salt
1/4 tsp pepper
1/4 tsp red pepper flakes

The Filling:

1 lb ground Italian sausage
8 ounces ricotta cheese
8 ounces mozzarella cheese, finely shredded
1/2 cup freshly grated Parmesan
1/2 tsp dry basil
salt & pepper

The Assembly and Baking:

2 TBSP cooking oil