Cheddar Stuffed Black Pepper Crusted Burgers - cooking recipe

Ingredients

1 lb ground sirloin
1 lb ground chuck
1 tablespoon Worcestershire sauce
1 teaspoon dry mustard
salt
6 extra-sharp cheddar cheese cubes (1-inch each)
1/4 cup fresh coarse ground black pepper (I used about 1/2 that amount)
2 tablespoons butter, softened
6 hamburger buns
6 slices cheddar cheese (thin slices)

Preparation

Combine ground meats in a large bowl.
Season with Worcestershire, dry mustard, 2 tsp salt and mix until combined.
Divide the meat into 6 equal portions and gently shape into a patty around a cube of cheese. Brush the patties all over with olive oil and make an imprint in the center of each patty with your thumb.
Spread the pepper on a shallow plate and roll the edge of each burger in the pepper until coated.
Preheat grill. Place burger on the cooking grate over direct medium heat.
Cover and grill for 4 minutes. Turn and continue grilling for 3 to 4 more minutes for medium rare burgers.
Top each burger with a slice of cheddar.
Butter both sides of buns and grill over direct medium heat until lightly toasted.
Serve burgers on rolls with desired toppings.