My Dad’s favorite Meatloaf

1/4 tsp. Pepper
1 ½ lbs. ground beef
1 egg, beaten
3/4 c. uncooked oats
3/4 c. milk
1/4 c. chopped onion
1 ½ tsp. Salt
Sauce:
1 1/3 c. ketchup
½ c. brown sugar
4 T. prepared mustard

Combine all ingredients except for sauce; mix thoroughly. Pack firmly into loaf pan. Combine ingredients for sauce and pour half over meatloaf. (A small amount of sauce can be mixed into meat before packing in pan) Bake at 350' for 1 hour. I drain grease a couple times throughout cooking. Use extra sauce for dipping.