🍲 Recipes

French Onion Dip Sandwiches (Slow Cooker)

By TheElusivePastry • Beef Sandwiches • Cuisine?
4.71 Prep: 40m Cook: 431m
Ingredients:
  • 5 tablespoons olive oil, divided
  • 2 large onions, thinly sliced
  • 3 tablespoons butter, divided
  • 1 teaspoon white sugar
  • ½ teaspoon salt
  • 3 cloves garlic, minced
  • 9 tablespoons water
  • ¼ cup dry vermouth
  • 2 ½ cups beef stock
  • 1 tablespoon Worcestershire sauce
  • 1 tablespoon soy sauce
  • 1 teaspoon fresh thyme
  • 1 bay leaf
  • ¼ teaspoon ground black pepper
  • 3 pounds rump roast
  • salt and ground black pepper to taste
  • 8 French rolls, split
  • 1 (6 ounce) package grated Gruyere cheese
Created: Sep 23, 2025 Updated: Sep 23, 2025