Uncle Bill's French Dip and Roast Beef Sandwich

READY IN: 7mins


  • 4
    tablespoons dry onion soup mix (Liptons)
  • 3
    cups water
  • 1
    lb finely sliced deli roast beef or 1 lb of your own cooked beef
  • 4
    4 large italian buns or 4 large portuguese buns
  • 2
    tablespoons butter
  • 2
    tablespoons horseradish, freshly processed (or more)
  • salt and pepper


  • Process dry onion soup mix in a coffee grinder until fine.
  • In a one quart microwave safe casserole dish or glass measure, add water, instant beef bouillon and dry onion soup mix.
  • Microwave on HIGH (full power) for 4 to 5 minutes until mixture has fully dissolved, stirring at least once.
  • Remove, cover and set aside to keep hot.
  • If you are using your own cooked roast beef, use an adjustable mandoline set on very thin, slice the amount of meat as required. You may also use a very sharp knife to slice the meat very thin.
  • If you desire the meat warm, place the thinly sliced meat on a micro-safe plate, cover with a paper towel and microwave on MEDIUM-HIGH for 1 to 2 minutes or until meat is just warm.
  • Cut buns partialy through lengthwise, leaving a hinge.
  • Butter each piece and spread some horseradish over each half.
  • Layer warmed sliced beef into buns; about 1/4 pound for each bun.
  • Salt and pepper to taste.
  • Close sandwich bun and place on individual plates and cut sandwich in half.
  • Pour beef broth mixture into individual small bowls.
  • Dip sandwich into beef broth mixture and enjoy.