Add all ingredients to a food processor. Pulse until it reaches your desired consistency (less for a chunkier salsa, more for a thinner one - my salsa pictured above was 8 to 10 pulses).
Refrigerate for at least one hour, then serve with your favorite tortilla chips. This salsa can be stored in an airtight container in the refrigerator for up to 2 weeks.
Notes
Rotel is a common canned product found in the U.S. - it is a mixture of diced tomatoes and green chiles. If you cannot find it, feel free to substitute an equal amount of canned diced tomatoes and green chiles.
This makes a large quantity, so if you are using a food processor with less than an 11-cup capacity, work in batches.