You are here: Home » Recipes » Red Onion Marmalade Red Onion Marmalade Kitchen Tested Yield 2 cups Prep 5 mins Cook 50 mins Long-cooking in wine and honey unveils the sweet side of onions. PrintEmail Serve leftover marmalade on top of grilled pork chops or chicken. Ingredients 4 teaspoons butter2 1/2 cups thinly sliced red onion2/3 cup red wine2 1/2 tablespoons honey1/8 teaspoon salt1/4 teaspoon Freshly ground black pepper1 cup diced apple Instructions Melt butter over medium heat in a small saucepan. Add onion and cook, stirring occasionally, until the onions are translucent and tender, 20 to 30 minutes. Add red wine, honey, salt and pepper. Bring to a simmer, reduce heat to low and cover. Cook until the onions are very soft and the mixture has cooked to a jam-like consistency, 20 to 30 minutes. Remove from heat, stir in apple and let cool. (The onion mixture can be prepared 1 day ahead of time and stored in the refrigerator.) Recipe by Chef Chris Koetke.