Food and Recipes Recipes Meat Loaf Sauce 5.0 (1) 1 Review This Meat Loaf Sauce recipe goes with Boarding House Meat Loaf. By Southern Living Editors Published on October 5, 2018 Print Rate It Share Share Tweet Pin Email Photo: Southern Living Prep Time: 10 mins Total Time: 10 mins Yield: 1 cup Ingredients 2 tablespoons butter 1/2 small onion, chopped 1/2 green bell pepper, chopped 3/4 cup ketchup 1 tablespoon cider vinegar Directions Melt butter in a large skillet over medium-high heat; add onion and bell pepper, and sauté 5 minutes or until vegetables are tender. Stir in ketchup and vinegar, and simmer, stirring constantly, until sauce thickens. For a spicier sauce, substitute 3/4 cup chili sauce for ketchup. Rate it Print