Smoked Gouda and Prosciutto Panini Sandwich

2 (1-inch) slices sourdough bread (about 8 ounces)
2 tablespoons olive oil or melted butter
2 ounces sliced smoked Gouda
2 ounces thinly sliced prosciutto
2 tablespoons thinly sliced red onions
2 slices tomato
1 ounce shredded fontina cheese

Brush both sides of the slices of bread with olive oil or butter. Assemble the sandwich layers as follows: prepared bread, smoked Gouda, prosciutto, onions, tomato, fontina, and bread. Place in a panini press (or in a heated grill pan or saute pan pressed with another heavy pan) and cook until crisp and golden. Serve immediately.

Yield: 1 sandwich