INGREDIENTS
1 lb
Ground beef
2/3 cup
Onion
1 1/2 tsp
Oregano, dried
1
Egg, large
2 cans
each) tomato paste
1 tbsp
Beef bouillon granules
24
Pasta shells, jumbo cooked and drained
2 cups
Mozzarella cheese, part-skim
1/2 cup
Parmesan cheese, grated
1
carton Ricotta cheese
2 cups
Water