French Onion Dip Sandwiches (Slow Cooker)

By TheElusivePastry

4.71 / 5

40min

7h 11min

See on AllRecipes

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