An easy and crowd-pleasing homey dish with a yogurt twist. Savory Cauliflower Gratin with Sweet Onions Go to recipes By Stonyfield Vegetarian Side Dishes European FallAn easy and crowd-pleasing homey dish with a yogurt twist. Ready In: 50 minutes Level: Medium Prep: 5 minutes Cook: 45 minutes Yields: 6 Servings Print RecipeIngredients1 Tbsp butter3/4 c sweet onion - julienne1 tsp minced garlic1/2 tsp kosher salt1 c baby spinach leaves or larger spinach cut into wide ribbons1 head cauliflower - divide into florets1 cStonyfield Organic Whole Milk Smooth & Creamy Plain2 Tbsp flour1/4 c grated cheddar cheese Freshly cracked black pepper Optional topping1/2 c panko crumbs2 Tbsp grated Parmesan cheese1 Tbsp extra virgin olive oil1 Tbsp chopped parsleydirectionsStep 1Melt butter in a small sauté pan over medium heat.Step 2Add onions and garlic and slowly caramelize for 15-20 minutes lowering heat if necessary and stirring occasionally.Step 3Season with salt near the end of cooking and at the last minute add and wilt spinach.Step 4Remove from heat.Step 5Blanch cauliflower in boiling water 3-4 minutes.Step 6Drain and cool.Step 7Whisk together the yogurt and flour.Step 8Stir in the cheese, salt and pepper.Step 9Toss yogurt mixture with cauliflower and caramelized onions and spinach.Step 10Place in baking dish.Step 11Mix together panko, parmesan cheese, oliv oil, and parsley and sprinkle over the top.Step 12Bake 375°for 20 minutes.