How to Make Grilled Cheese Butter the toast – spread 1/2 Tbsp butter on one side of each slice of bread. Heat skillet – place a skillet over low to medium/low heat. A griddle should be at 275˚F. Immediately add 2 slices of bread with the butter-side-down. Add cheese – stack cheeses on one of the pieces of bread, cover with the other piece of toast and flip the sandwich over. Brown the toast – Continue sauteeing, flipping once, until both sides are golden brown and cheese is melted. Serve – cut the sandwich in half on the diagonal to serve.