Bacon and Gorgonzola-stuffed Burgers with Grilled Apples

1 pound lean ground beef

2 teaspoons Dijon mustard

2 teaspoons Worcestershire sauce

½ teaspoon salt, plus more to season the apples

½ teaspoon ground black pepper, plus more to season the apples

½ cup crumbled Gorgonzola cheese

4 slices of crispy cooked bacon, crumbled

1 large cooking apple such as a Rome, cored and cut into -inch slices

½ teaspoon canola oil

4 hamburger buns

1 small red onion, thinly sliced

Heat a gas grill to medium-high or prepare a charcoal grill.

In a large bowl, combine the ground beef, mustard, Worcestershire, salt and pepper. Mix thoroughly, but do not overwork. Shape the mixture into eight ½-inch-thick patties. Set aside.

Combine cheese and bacon, then form the mixture into 4 small patties. Set them on top of four of the beef patties, then set the remaining beef patties on top, pressing the edges firmly together to seal. Set aside.

Brush the apple slices with oil and season with salt and pepper.

Grill the burgers until they register 160 degrees on an instant-read thermometer and there is no pink inside, about 4 minutes per side.

Meanwhile, on a cooler part of the grill, cook the apple slices until browned and tender. Toast the buns on the edge of the grill.

Assemble the burgers, top with the grilled apples and red onion.

Serves four.