INGREDIENTS
1 1/2 bunches
bacon pieces
1 tbsp
extra virgin olive oil
1
garlic clove
1 tbsp
lemon zest
3/4 cup
parmesan cheese
1/2 cup
parsley
30 oz
part-skim ricotta cheese
5 servings
salt and pepper
1 cup
shredded mozzarella cheese
1 tbsp
unsalted butter
13 1/4 oz
whole grain pasta shells
1 large
yellow onion