Heirloom Tomato and Avocado Stack

Ingredients

• 1 cup avocado diced peeled ( 1 small)
• 0.3 cup cilantro leaves fresh chopped
• 0.3 teaspoon garlic fresh minced
• 0.1 teaspoon cumin 
• 1 Dash pepper red
• 2 pounds tomatoes 
• 0.5 teaspoon lime zest grated
• 0.3 cup buttermilk low-fat
• 1 tablespoon mayonnaise reduced-fat
• 2 tablespoons cream sour reduced-fat
• 0.3 cup onion red vertically sliced
• 0.3 teaspoon salt 
• 0.3 teaspoon salt 

Equipment

• food processor
• bowl
• blender

Directions

1. To prepare dressing, combine first 9 ingredients in a small food processor or blender; process 30 seconds or until pureed, scraping sides of bowl occasionally. Cover and chill.
2. To prepare salad, slice each tomato crosswise into 4 equal slices (about 1/2 inch thick).
3. Place 1 tomato slice on each of 4 salad plates; sprinkle slices evenly with 1/4 teaspoon salt. Top each serving with a few onion pieces and about 1 tablespoon avocado. Repeat layers 3 times, ending with avocado.
4. Drizzle 2 tablespoons dressing over each serving; sprinkle with black pepper, if desired.