Add the chopped onion and jalapeño pepper to a food processor first.
Add the crushed tomatoes, diced green chiles, cilantro, lime juice, garlic, sugar, salt, black pepper, and cumin.
Blend until the Restaurant Style Salsa reaches your desired consistency. For a smoother salsa, blend a little longer.
Taste and adjust salt or lime juice if needed.
Refrigerate for at least 1 hour before serving for the best flavor.
Serve with corn chips, tacos, burritos, grilled chicken, or fresh vegetables.