Spinach and Cheese Stuffed Shells

INGREDIENTS

10 oz

box frozen chopped spinach

12 oz

package jumbo shells

15 oz

part-skim ricotta cheese

1 1/2 cups

cottage cheese

1 1/2 cups

grated mozzarella cheese, divided

1/2 cup

grated Parmesan cheese

1/2 tsp

salt

1/4 tsp

pepper

25 oz

jar of your favorite marinara sauce