Using a rolling pin, flatten bread squares to 1/4-inch thickness.
Place cheese slice on top of each slice of bread, rolling up tightly.
Melt 2 tablespoons butter in a large skillet over medium high heat. Working in batches, add roll ups to the skillet, cooking until all sides are golden brown and the cheese has melted, about 3-4 minutes, adding more butter as needed.
Serve immediately.
Notes
*Whole wheat or whole grain bread can be substituted.*Different types of cheeses of your choice can also be used here (ex. Monterey Jack, pepper jack, Swiss, provolone, mozzarella, etc.).