Makes: 4 sandwiches
red onion, thinly sliced
2 tablespoons olive oil
1/2 cup melted butter
1/4 cup olive oil
8 slices Horseradish Cheddar cheese
12 ounces shaved roast beef
sourdough bread, cut into 3/4-inch thick slices
Saute onion slices in 2 tablespoons olive oil in a medium saucepan until tender. Combine butter with olive. Brush 1 side of 4 slices of bread with the butter mixture and place, butter side down, in Panini grill. Top each bread slice with 1 slice of cheese, beef, onions and a second slice of cheese. Brush 1 side of remaining slices of bread with butter mixture and place over cheese, butter side up. Cook 4 to 5 minutes or until browned and cheese melts.