Baked Ziti without salad

olive oil 2 tablespoons olive oil 1 large onion , cut into small dice 6 garlic cloves , minced 1 1/2 lbs hot Italian sausage , removed from its casing and[...]

2 tablespoons butter 2 tablespoons olive oil 1 large onion , finely chopped 1/4 lb mushroom , thinly sliced 2 garlic cloves , minced 1 (16 ounce) can tomato[...]

6 ounce pasta, ziti 1 each garlic clove minced 15 ounce ricotta cheese 1/4 teaspoon black pepper * 8 ounce mozzarella cheese shredded 1 pinch nutmeg ground *[...]