Triple Cheesy Chicken Casserole

Ingredients (8)

• + 1 (10.5 ounce) can condensed cream of chicken soup add to pantry
• + 1 (8 ounce) package cream cheese, at room temperature add to pantry
• + ½ cup shredded mozzarella cheese, or more to taste add to pantry
• + ½ cup shredded Cheddar cheese, or more to taste add to pantry
• + ½ cup mayonnaise, or more to taste add to pantry
• + 3 breast, bone removeds cooked boneless chicken breasts, chopped add to pantry
• + 1 ½ sleeves vegetable-flavored buttery round crackers (such as Ritz®) add to pantry
• ✓ ½ cup margarine, cut into pieces