INGREDIENTS:<br />1 1/2 pounds Certified Angus Beef ® ground beef, 80/20 lean<br />1/2 cup mayonnaise<br />1 tablespoon yellow mustard<br />1 tablespoon grated yellow onion<br />2 teaspoons hot sauce<br />1 teaspoon Worcestershire sauce<br />4 white hamburger buns<br />2 tablespoons butter, room temperature<br />1 1/2 teaspoons kosher salt<br />1/2 teaspoon pepper<br />4 slices American cheese<br />2 cups shredded iceburg lettuce<br />8 slices vine-ripe tomatoes
