INGREDIENTS
2 28 ounce cans
crushed tomatoes
4 cloves
garlic, finely chopped
2 tbsp
dried oregano
1/2 tsp
kosher salt
1/4 tsp
red pepper flakes
1/4 tsp
freshly ground black pepper
2 15 ounce containers
fresh ricotta
2 cups
grated mozzarella (8 ounces)
1/4 cup
grated Parmesan
16
lasagna noodles (about 3/4 of a 1-pound box)
5 oz
baby spinach (about 6 cups packed)