This is the sauce that I use to top almost all my recipes that ask for a sauce topping. I also serve it on the side as a dipping sauce. It is simple and easy to make.
On medium high, melt butter in small sauce pan. Add the onions, bell pepper and tomato. Let veggies saute in butter for about 2-3 minutes.
Add Tomato sauce, ketchup and water. Stir and add the cumin. Add salt to taste, add cilantro and let simmer for about 5-7 minutes or until the sauce has thickened enough to cover the back of a metal spoon when dipped in the sauce.
Serve on top of cabbage salads or on the side as a dipping sauce.