Combine rest of ingredients, place into casserole dish and top with cheese and oregano.
Bake at 375 degrees for 30-35 minutes.
Great with garlic bread or cheese toast.
**for OAMC: label and freeze after step 3. Defrost overnight and bake covered 45-60 minutes or until heated through. Uncover and bake an additional 5 minutes, if desired. To bake from frozen, double baking time.