Yia Yia's Baked Shrimp with Feta

This is a simple delicious dish my M.I.L. Alexandra showed me to how to make:

2 Lbs large shrimp, peeled and deveined
1 small onion, sliced
1 green pepper, sliced
1 red pepper, sliced (this is my addition- it adds color and a little more veggies)
8-12 ounces feta, crumbled (use as little or much as you like)
salt and pepper
oregano
olive oil
2 TB tomato sauce

Mix everything together and place in oven proof dish. Bake at 350 degrees for 35-40 minutes, making sure not to overcook as shrimp becomes tough. Serve in a bowl with steamed rice or orzo. Be sure to have lots of fresh baked bread to soak up all the juices!