Reduced-fat cheese would be an obvious swap, but meltability is a problem. We found it worth using a few more ingredients to duplicate the irresistible texture of the original. Reduced-fat shredded cheddar combines with light cream cheese and canola mayo for a mixture that has 40% less saturated fat than regular cheddar. When slathered on whole-grain bread and sautéed in olive oil, the mixture melts into the gloriously silky, ultracheesy filling you see here. As for swapping olive oil for butter, it saves an additional 7 grams of sat fat.
THE FORMULA Combine ½ ounce 1/3-less-fat cream cheese and 1 teaspoon canola mayo. Add 1 ounce 2% reduced-fat shredded cheddar cheese. Spread between 2 (1-ounce) slices whole-grain bread. Heat a small skillet over medium heat; sear each side in ¼ teaspoon olive oil until bread is browned and crisp. CALORIES 288; FAT 13.8g (sat 5.8g); SODIUM 556mg