INGREDIENTS
13 1/4 oz
grain pasta shells
1 tbsp
butter
1 tbsp
extra virgin olive oil
1 large
onion
1
garlic clove
1 1/2 bunches
into bite-sized pieces
1 serving
salt and pepper
30 oz
part-skim ricotta cheese
1 cup
mozzarella cheese
3/4 cup
parmesan cheese
1 tbsp
lemon zest
1/2 cup
parsley
3 cups