grilled mesquite burgers

Ingredients

• 1 pound ground sirloin (or ground lean beef)
• 1 1/2 tablespoons mesquite seasoning (i used mccormick grill mates) - see below for homemade version if you can't find it in stores
• 4 slices cheddar cheese (or american cheese)
• 1/2 medium red onion, cut into 4 thin slices
• 4 hamburger buns
• 2 tablespoons ketchup
• 2 tablespoons mayonnaise
• 1/2 tsp mesquite seasoning
• 4 - lettuce leaves (i prefer romaine, but iceberg works ok)
• OPTIONAL BURGER TOPPINGS:
• - crisp-cooked bacon
• tomato slices
• sliced pickles
• HOMEMADE MESQUITE SEASONING (**IF NOT USING COMMERCIAL BRAND**) - MAKES 4 TBSP:
• 1 tablespoon brown sugar
• 1 tablespoon smoked paprika (or chipotle chili powder or ancho chili powder)
• 1 teaspoon salt
• 1 teaspoon black pepper
• 1 teaspoon onion powder
• 1 teaspoon ground cumin
• 1/2 teaspoon garlic powder
• 1/2 teaspoon sweet paprika
• 1/2 teaspoon chili powder
• 1/4 teaspoon dried rosemary, chopped finely
• 1/4 teaspoon dry mustard (mustard powder)