The most essential elements of a French dip sandwich are tender, thinly sliced beef and a savory jus for dipping. When you use a slow cooker, you can prep in the morning for delicious sandwiches that are ready come dinnertime.
Ingredient:
2 large onions, cut into 1/4-inch slices
1/4 cup butter, cubed
1 beef rump roast or bottom round roast (3 to 4 pounds)
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