3 steak sandwiches with crispy onions Recipes

onion, thinly sliced, unsalted butter, olive oil, mushroom, thinly sliced, garlic clove, minced, beef broth, heavy cream, ketchup, worcestershire sauce , to taste, dijon mustard, steak, grilled , cut into 1/8-inch slices, italian bread , halved horizontally and each half buttered lightly, cut into 4 pieces, toasted

sliced onions, unsalted butter, olive oil, sliced mushrooms, garlic clove, minced, beef broth, heavy cream, ketchup, worcestershire sauce , or to taste, dijon-style mustard, grilled steak , cut into 1/8-inch thick slices, italian-style bread , halved horizontally and each half buttered lightly, cut into 4 pieces, and toasted