4 Servings 10 min Cook
4 Mushroom, whole Mushrooms
16 Oz Thinly Sliced Roast Beef
1 Cup, chopped Onions
3 Tbsp Butter
1/4 Tsp Garlic
1 Tsp Salt
1/4 Tsp Pepper
1/4 Cup Mayonnaise-Like Dressing
2 Tsp Dijon Mustard
4 Slice (1 oz) Provolone Cheese
Chop onions, mince garlic, and clean and remove stems of mushrooms.
Combine the sliced onions, butter, garlic powder, salt, and pepper in a medium saute pan.
Cook over medium heat until the onions are soft and starting to brown.
Meanwhile, place the mushroom caps upside down on a paper towel-lined plate and microwave on high for 3 minutes.
Turn mushrooms over and microwave for another 2 minutes.
Add the beef to the onions and cook for 2 minutes.
Remove from the heat and stir in the mayonnaise and mustard - stir well.
Taste and season with additional salt and pepper as desired.
Stuff the mushroom caps generously with the beef mixture (about ½ cup per cap if making four large ones), then top with a slice of cheese.
Broil for 2-3 minutes, or until the cheese is browned and bubbling.