Prep Time::5 mins
Cook Time::40 mins
Total Time::45 mins
Servings::8
Ingredients
2 tablespoons olive oil
1 tablespoon butter
2 large red onions, thinly sliced
¼ cup white sugar
1 cup dry red wine
¼ cup balsamic vinegar
salt to taste
Directions
Heat oil and butter in a large skillet over medium heat until butter melts. Add onions and sugar; cook and stir until onions start to caramelize, about 15 minutes.
Pour red wine and balsamic vinegar into the skillet and bring to a boil. Reduce the heat to medium-low and simmer until liquid is evaporated, 15 to 20 minutes more. Season with salt.