The best beef kielbasas recipe! Ingredients: 4 beef kielbasas 3 cups packed dark brown sugar 4 tbsp white vinegar 4 tbsp yellow mustard How to: In a 9 x 13 metal pan add brown sugar, white vinegar, and mustard. Mix until well combined. Add pan to the stovetop and put on medium heat until mixture is easy to stir and more liquidy. Cut kielbasas 1/2 inch thick and add to your pan with the brown sugar mixture. Stir until they are all coated. Bake at 350 degrees for 15 minutes. Take out of the oven a