Heat oven to 350 F. Mix ground beef, eggs, sour cream,catsup, mustard and bread crumbs. Add in the onion mix. Start with 1 tablespoon of onion soup mix and test by forming a little patty and fry it in a frying pan. Adjust taste according to your liking. Pour in mixture into ungrease bread pan . Bake uncovered until done 45 to 50 minutes. Brush meatloaf with catsup as desired.