Baked Penne with Italian Sausage

Ingredients

• 1 (24oz) jar of your favorite pasta sauce (if you’re not making your own)
• 1/2 lb package dry penne pasta (or other GF pasta)
• 1 teaspoons olive oil
• 1 pound Italian sausage
• 1/2 cup chopped onion
• 1 cup shredded mozzarella cheese
• 1/2 cup parmesan