Go Back
These Guinness Beef Sliders are everything you would want in a sandwich!

Guinness Beef Sliders

These Guinness Beef Sliders are everything you would want in a sandwich! Delicious butter rolls, layered with roast beef, swiss cheese, mushrooms, and onions, then topped with a rich Guinness glaze and baked to perfection. Perfect for St. Patrick's Day or any day, these sliders are guaranteed to become a favorite!
Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings 12
Author Cathy Trochelman



  • 1 Tbsp. butter
  • 8 oz. sliced mushrooms
  • ½ vidalia onion sliced
  • ¼ c. Guinness
  • 1 package sandwich rolls I used King's Hawaiian Savory Butter Rolls
  • ¾ lb. sliced roast beef
  • 6 slices swiss cheese


  • 1 bottle Guinness or use the remainder of the bottle used for mushrooms & onions
  • 1 stick butter
  • ¼ c. brown sugar
  • 1 Tbsp. dried mustard
  • 1 tsp. onion powder
  • 2 cloves garlic minced


  1. In a medium skillet, melt butter over medium-high heat. Add mushrooms, onions and ¼ c. Guinness and saute until liquid is absorbed.
  2. Prepare glaze by combining all ingredients in a medium saucepan.
  3. Bring mixture to a boil, then lower heat slightly and cook until thickened. (*Mixture should be reduced by at least half - when in doubt, reduce it a little more!)
  4. Assemble sandwiches by slicing rolls in half, then filling with roast beef, sautéed mushrooms & onions, and swiss cheese.
  5. Pour glaze evenly over sandwiches.
  6. Bake, uncovered, at 350 degrees for 30 minutes.