This recipe makes a sauce that tastes and looks just like taco bell's. I think they may actually use the same seasonings.

MEXICAN PIZZA SAUCE LIKE TACO BELL

1 (16 oz.) can of diced tomatoes
1 handful diced green onion tops
3 Tbsp. chopped cilantro
2 Tbsp. McCormick Taco Seasoning

Add all ingredients in a saucepan; simmer for 15 minutes. Serve on top of pizza.