1/4 - cup honey
1/4 - cup Dijon mustard
1 - Tablespoon fresh mint leaves, finely chopped
1/4 - teaspoon salt
1/8 - ground pepper
1 - pound ground beef
Salt & pepper to taste
4 - fresh pineapple slices
1 - Tablespoon vegetable oil
4 - hamburger buns, split
1 - cup any lettuce type

• In small bowl, add honey, mustard, mint, salt and pepper. 
• Whisk together and set aside.
  
• To the ground beef, add salt and pepper. 
• Shape into 4 patties. Brush both sides of the patties with honey-mustard glaze and place on the grill. 
• Cook until golden brown on one side, about 5 to 8 minutes. 
• Turn over and continue grilling. 
• Glaze each side one additional time while grilling. 
• Grill burgers about 15 to 20 minutes or until meat thermometer inserted into center reaches at least 160°F.
  
• Meanwhile, brush the slices of pineapple with oil and grill for 1 to 2 minutes per side or until golden brown.
  
• Place the buns on the grill and heat for 20 to 30 seconds. 
• Remove from the grill and place a burger on the bottom half of each bun. 
• Top each burger with a slice of pineapple and lettuce leaves.