INGREDIENTS
8 oz
90% lean ground beef, lean
5 oz
Baby spinach, fresh
1 cup
Onion
3/4 tsp
Oregano, dried
1 1/4 cups
Chicken stock, unsalted
1 1/2 cups
Tomatoes or tomato sauce, unsalted
8 oz
Penne pasta, whole-grain
1/2 tsp
Black pepper
1/2 tsp
Salt
1 tbsp
Olive oil
4 oz
Preshredded part-skim mozzarella cheese