Roasted Cauliflower Gratin with Butternut Squash - 4 Better Health

Ingredients

• 2 cups Roasted Cauliflower
• 2 cups butternut squash, peeled & chopped
• 3 tablespoons olive oil
• 1 medium yellow onion, sliced lengthwise
• 1 1/2 cups Gruyere cheese, shredded (replace with vegan cheese if dairy free)
• 1/3 cup walnuts, toasted & chopped
• 1 tablespoon fresh rosemary, chopped
• sea salt & freshly ground pepper