Serve sliced steak on grilled Italian bread. Cut Italian bread into 3/4-inch-thick slices; brush both sides lightly with olive oil. Rub bread with cut edge of raw garlic clove. Grill on both sides until golden brown. Spread with some of the sour cream sauce; top with sliced meat. Serve as open-face sandwiches with potatoes and onions on the side.
This spicy sour cream sauce is also great when used as a sandwich spread, topping for hot baked potatoes or dipping sauce for onion rings or french fries.
Prepare using a variety of colored potatoes, such as red, Yukon gold and purple. You can either create the mix yourself or purchase a pre-mixed bag available in the produce section of larger supermarkets.