Whataburger Cheese Spread

Ingredients

• 1 tablespoon fresh lemon juice
• 1 tablespoon ground mustard
• 1 1/3 tablespoons distilled white vinegar
• 1 cup Kraft mayonnaise
• 2 tablespoons chipotle peppers in adobo sauce
• 1 1/2 tablespoons freshly cracked black pepper
• 1/2 teaspoon white pepper powder
• 1 teaspoon sea salt
• 1 tablespoon onion powder
• 1 tablespoon garlic powder
• 1 teaspoon dried parsley flakes
• 1/4 teaspoon monosodium glutamate
• 1 tablespoon softened butter
• 8 slices thick-cut Texas toast
• Burger Ingredients
• 1 tablespoon Worcestershire sauce
• 1/2 cup finely chopped white onions
• 2 teaspoons unsalted butter
• 1/2 teaspoon kosher salt
• 4 slices Monterey Jack cheese
• 1 pound ground beef chuck