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

Bahan-bahan (4 porsi)

• 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
• 1 head romaine (chopped (about 5 cups))
• 1 medium corn on the cobb (cooked and cut off husk*)
• 4 to 5 large grape tomatoes (quartered)
• 1/2 large avocado (3 oz, sliced)
• 1/4 cup sliced red onion