1 1/2 lbs. ground beef
1 chopped onion
1 chopped bell pepper
3/4-1 c. dry oatmeal (to make meat loaf firm)
Salt & pepper to taste

Preheat oven to 375 degrees. Combine all above ingredients together and shape into loaf. Bake at 375 degrees while preparing the following sauce:

In saucepan mix: 3 tbsp. vinegar 3-4 tbsp. brown sugar 1 1/2 tsp. prepared mustard

Heat on medium heat stirring constantly until sugar and mustard are dissolved. Pour 1/2 of sauce over top of meat loaf. Lower temperature to 350 degrees and bake approximately 1 hour. Pour remaining sauce on top and bake 15 minutes longer.