2 tablespoons Butter
1 medium White Onion, Chopped Into ¼” Pieces
1 medium Green Bell Pepper, Chopped Into ¼” Pieces
2 cloves Garlic, Chopped Fine
2 pounds Lean Ground Beef
1 cup Marinara (Pasta) Sauce
1 cup Ketchup
¼ cup Yellow Mustard
1 tablespoon Red Wine Vinegar or (Cider Vinegar)
1 tablespoon Worcestershire Sauce
¼ cup Light Brown Sugar
2 teaspoons Paprika
2 teaspoons Salt
½ teaspoon Ground Black Pepper
1 tablespoon Cornstarch
2 tablespoons Cold Water