Saucy Greek Baked Shrimp

large (peeled and deveined shrimp (I like the Key West Pinks))

red pepper flakes

kosher salt

olive oil

medium onion (chopped)

garlic cloves (pressed or minced)

15- ounce can crushed tomatoes

ground allspice

ground cinnamon

crumbled feta cheese

chopped fresh dill