For the pimento cheese: – 2 cups shredded sharp cheddar cheese – 6 ounces cream cheese – 3 Tablespoons mayonnaise – 4 ounce jar pimento peppers, drained and chopped – 1/2 teaspoon Old Bay seasoning – 1/2 teaspoon Tabasco sauce – Salt, to taste For the burgers: – 1 1/2 lbs ground beef – 1 1/2 teaspoons Old Bay Seasoning – Fresh black pepper – 1 teaspoon salt – Pat of butter (optional) To serve: – Sliced tomato – Leaf lettuce – Sliced red onion