Fava Beans Just Like Grandma Made

Name: Fava Beans Just Like Grandma Made
Prep time: 31 min
Cook time: 31 min
Total time: 31 min
Yield: 2
Cuisine: Global
Ingredients: 1 teaspoon butter; 907 grams fava beans, fresh, will yield about 1 pound shelled beans; 1 garlic clove, finely chopped; 1 teaspoon olive oil; 1 large onion, cleaned and chopped; 28 grams parmesan cheese, grated; 0 teaspoons pepper; 227 grams tomato sauce