Heat a saucepan over medium high heat and add the olive oil. When oil is hot add onions. Turn down to medium low heat and cook onions for about 30 minutes, stirring often. Add the cabernet about halfway through cooking. Set aside.

In a small bowl, combine mayonnaise, chipotle pepper and adobo sauce. Mix well.

In a bowl combine ground beef, ancho chile powder and salt and pepper. Gently mix to blend flavors. Form into 6 small burger patties.

In a grill pan or on outdoor grill, grill burgers about 5 minutes per side. Add cheese just before removing from heat.

To build your sliders, place pickle slices on bottom bun. Top with burger patty with chipotle mayo, caramelized onions, lettuce and top bun. Serve immediately.