Start to finish: 50 minutes
Makes 12 sliders
3 tablespoons vegetable oil, divided
1/2 cup finely chopped yellow onion
3 ounces mushrooms (white, cremini or shiitake), finely chopped
Kosher salt
2 tablespoons finely chopped pitted green olives
2 tablespoons finely chopped, drained, canned green chilies
3 ounces sliced sharp cheddar cheese, broken into 12 equal pieces
1 1/2 pounds ground beef, shaped into 12 sliders, each about 3/4 inch thick
Ground black pepper
1/3 cup beer
12 slider buns
In a large (at least 12-inch) skillet over medium, heat 1 tablespoon of the oil. Add the onion and cook until golden, about 8 minutes. Using a slotted spoon, transfer the onion to a bowl. Add another tablespoon of the oil to the pan, the mushrooms and a hefty pinch of salt. Cook, stirring occasionally, until the liquid the mushrooms give off has evaporated, about 5 minutes. Transfer the mushrooms to the bowl with the onion. Reserve the skillet.
Add the olives and chilies to the mushroom mixture and stir well. Set aside.
Return the skillet to high heat. Add the remaining tablespoon of oil and wait until it is almost smoking. Meanwhile, season the sliders on one side with salt and pepper. When the oil is hot, add the sliders, seasoned side down (it will be a little crowded in the pan), and cook them until they are just browned on the first side, about 2 minutes. Sprinkle the top side of each with salt and pepper, turn the sliders over and cook for another 2 minutes.
While the sliders are browning, top each slider with a heaping teaspoon of the mushroom mixture, dividing all of the mixture among the sliders, then place a piece of cheese on top of each. Quickly pour the beer into the pan, all around the sliders, cover the pan and steam for 2 minutes.
Turn off the heat and let the sliders sit in the pan for another minute to let the cheese melt completely. Spoon some of the liquid in the skillet onto the tops and bottoms of the buns, transfer the sliders to the buns and serve right away.
Nutrition information per slider: 280 calories; 120 calories from fat (43 percent of total calories); 13 g fat (4 g saturated; 0 g trans fats); 45 mg cholesterol; 370 mg sodium; 23 g carbohydrate; 1 g fiber; 3 g sugar; 16 g protein.
Sara Moulton , Associated Press
