Healthy Shepherd's Pie with Ground Turkey

Ingredients (14)

• + 2 tablespoons olive oil add to pantry
• + 2 heads cauliflower, stemmed and chopped add to pantry
• + ¼ cup Greek yogurt add to pantry
• + 1 (14.5 ounce) can chicken broth, or as needed add to pantry
• + salt and ground black pepper to taste add to pantry
• + salt and ground black pepper to taste add to pantry
• + 2 pounds ground turkey add to pantry
• + 2 cloves garlic, chopped add to pantry
• + 2 (1.25 ounce) packages beefy onion soup mix add to pantry
• + 2 tablespoons all-purpose flour add to pantry
• + ¼ cup water, or as needed add to pantry
• + 2 (8 ounce) bags frozen corn add to pantry
• + 1 cup shredded fat-free Cheddar cheese add to pantry
• ✓ ¼ cup french-fried onions, or to taste