From Laura Werlin, the San Francisco-based author of “Grilled Cheese, Please!: 50 Scrumptiously Cheese Recipes.” (Time is for preparing the sandwich alone. Make Tomato Jam early in the morning for ready use.) Some grilled cheese making tips: -- Grate the cheese. It will melt faster and more evenly than sliced cheese. -- Butter the bread, not the pan. Thinly sliced bread and soft, salted butter work best. -- Cook low and slow. Don’t rush. Grill the sandwich slowly over medium heat. It’s done when the bread is crispy and the cheese is fully melted. -- Cover up. Lock in the heat by covering the sandwich while cooking. -- Press, flip, repeat. Use a spatula to press down firmly on the sandwich while cooking. Flip twice (pressing with each flip).