Combine the mayonnaise, sour cream, chopped peppers, minced garlic, lime juice, onion powder, salt and pepper, and parsley in a blander or food processor, and blend until very smooth.
1 cup Mayonnaise, ½ cup Sour cream, 2 cloves Garlic, 1 Tablespoon Lime juice, 1 Tablespoon Parsley, ½ teaspoon Onion powder, Salt and pepper