Heat the butter and vegetable oil in a medium skillet over medium-low heat. Stir in the onions, sugar, ½ teaspoon salt, and ¼ teaspoon pepper. Cover and cook, stirring once, 10 minutes. Uncover ...

Total Time: 1 hour Ingredients 2 tbsp. salted butter 2 tbsp. vegetable oil, plus more for the grill 2 onions, halved and thinly sliced 1/2 tsp. sugar 1 1/2 tsp. kosher salt 1 1/4 tsp. black pepper ...