Succotash Salad with Buttermilk-Avocado Dressing

Ingredients

• 1 cup fresh lima beans*
• 2 ears fresh sweet corn*
• 1/4 teaspoon onion powder
• 1/2 of an avocado, seeded, and peeled
• 1 large head butterhead (Boston or bibb) lettuce, torn
• 1/2 cup crumbled blue or feta cheese (2 oz.)
• 3/4 cup buttermilk
• 1/2 cup finely chopped red onion
• 6 slices bacon, crisp-cooked and crumbled
• 2 cups sliced grilled chicken breast**
• 1/4 teaspoon dry mustard
• 1 tablespoon snipped fresh Italian (flat-leaf) parsley
• 1/4 teaspoon ground black pepper
• 1/4 teaspoon salt
• 1 clove garlic, minced