This was super-easy with using the food processor to chop everything up.
I varied my recipe slightly and used the following and it is more of an tomato and onion salsa than just tomato based and it was very mild:
1 can Rotel Tomatoes with Jalepenos
1 can Tomato Sauce
1 fresh tomato
3 cloves garlic
1 1/2 med. sized yellow onions
2 Tsp. Mexican Seasoning
1 TBSP lime juice
4 dashes Seasoned salt
1 handful of Cilantro
I didn't add any sugar as the yellow onions were very sweet.