Warm a non-stick skillet over medium-low heat. Add the sandwiches and cook, covered, until the underside is golden but not burnt, 3 to 5 minutes. Flip and cook, covered, until the underside is golden but not burnt and the edges are crisp, 3 to 5 minutes more.☞ TESTER TIP: To help get that golden, crispy crust, use a spatula to press down firmly on your sandwich a couple times while it is cooking.