Cut stem end off of Roma Tomatoes and make an "X" in the skin on the other end and place in a microwave safe bowl, add a couple tablespoons of water and cover with plastic wrap. Microwave on high about 2 minutes, until tomatoes are softened and skins come off easily. Discard skins and set aside.
Put garlic, jalepeno, spices, Maggi Seasoning and lime juice in the work bowl of a 6 cup food processor with the chopping blade, and pulse a couple times until the garlic and jalepeno are minced.
Add canned tomatoes and pulse about 3 times.
Add Roma tomatoes, onion, and cilantro and pulse until the onion is at desirable size- 1/4 inch or so.