Playing Rachael's Apple-Dijon Turkey Cheeseburgers with Caramelized Onions

A delish combo of sautéed apples and sharp cheddar make this burger perfect for crisp, fall weather. 

Ingredients
  • 2 tablespoons olive oil
  • 3 tablespoons butter
  • 2 onions, peeled, quartered and thinly sliced
  • Salt
  • 1 tablespoon light-brown sugar
  • 2 tablespoons balsamic vinegar
  • 2 crisp apples, such as Gala or Honeycrisp
  • A few grates of nutmeg
  • About 4 teaspoons lemon juice
  • 1 1/4 pounds ground turkey, white and dark meat, (1 package)
  • About 1 1/2 teaspoons Worcestershire sauce
  • Black pepper, to taste
  • White pepper, to taste
  • 1 teaspoon granulated onion, 1/3 palmful
  • About 2 scant tablespoons sage leaves, thinly sliced or chopped (6-7 leaves)
  • 1 tablespoon Dijon mustard
  • 8 ounces sharp white cheddar, and/or smoked blue cheese, sliced or crumbled
  • 4 potato rolls, preferred brand Big Marty's
  • Lettuce and sliced bread and butter or dill pickles, to serve
Yield
Serves: 4
Preparation

Heat a skillet over medium heat with 1 tablespoon olive oil, 1 turn of the pan. Add a pat of butter to oil and when it foams, add the onions, season with salt, and cook to caramel in color, 25-30 minutes, stirring occasionally. Add a bit of water if they begin to brown. Stir in light brown sugar and balsamic vinegar, let them dissolve and absorb, then remove from heat.  

Core one apple and thinly slice or use a mandoline. Heat a saute pan or skillet over medium heat with a couple pats of butter, and when butter foams, add the sliced apples and cook about 2 minutes on each side. Season apples with a little nutmeg, a few grates, and 1 tablespoon lemon juice, then remove from heat and reserve.

Peel and quarter, then core and grate remaining apple, and add about 1 teaspoon lemon juice.  

For burgers, in a bowl, combine turkey with Worcestershire, salt, black pepper, white pepper, grated apple, granulated onion, sage and Dijon mustard. Form 4 large thin patties, thinner at center for even cooking.  

Heat a large cast iron skillet or griddle over medium-high heat. Add oil, 1 turn of the pan, and cook patties 10 minutes, turning occasionally. Top with sliced apples and cheddar and/or blue cheeses, then lightly cover pan with foil or lid and melt cheese.

Build burgers: bun bottom, pickles, lettuce, cheeseburgers, apples, onions, bun top.