Place thawed ground meat in a large bowl, then set aside. Process in a blender or food processor the oats, eggs, spices and Worcestershire sauce. Add this blended mix to the ground meat. Mix together lightly with a fork. Don’t overmix or it will be too compacted and tough.
In the same blender you used already, put all the sauce ingredients in and blend. Pour half of the sauce in the bowl with the ground meat and mix well. Shape meat into rectangle loaf in a greased 9x13 pan. Pour rest of tomato sauce mix on top and spread around with a spatula (if short on time, use store bought pasta sauce low in sugar in place of making the sauce).
Add optional cheese.
Bake at 350 degrees for 50 minutes or until meat thermometer reads over 160 degrees. Using pork in your meatloaf will result in there being extra grease in the pan. If there is a lot of grease in the bottom when done cooking, carefully drain the pain by tipping it at the corner into a bowl to get some of the grease out.
Slice and serve.