Let's take a classic grilled cheese sandwich to the next level by making it The Ultimate Grilled Cheese. I'm sharing my secret blend of ingredients to create an epic sandwich worthy of its name.
In a medium bowl add the cream cheese, mayo, cheddar, mozzarella, garlic powder, and salt. Mix with a wooden spoon to evenly combine.
Divide the mixture evenly onto six pieces of thick-sliced Italian bread. Top with the second piece of bread. Butter the outside of the sandwiches.
In a lidded skillet over medium heat, toast the sandwiches for four to five minutes on each side or until the bread is lightly browned and the cheese is melted. Use the lid for half or more of the cooking time to thoroughly melt the cheese.