Summer Corn, Tomato and Avocado Salad with Creamy Buttermilk-Dijon Dressing

Ingredients (15)

• For the dressing (makes 3/4 cup):
• 1 tbsp minced shallots
• 2 teaspoons Dijon mustard 
• 2 tbsp white wine vinegar
• 6 tbsp 1% buttermilk
• 2 tbsp extra virgin olive oil
• 1/4 tsp garlic powder
• 1/2 teaspoon kosher salt
• pinch black pepper
• For the Salad:
• 1 head romaine
• 1 medium corn on the cobb
• 4 to 5 large grape tomatoes
• 1/2 large avocado
• 1/4 cup sliced red onion