Cauliflower Mascarpone Gratin

Try this delicious recipe from the Electric Kitchen!

• 1 tablespoon softened butter
• 1 head cauliflower, separated into florets
• 1 container (8 ounces) Mascarpone cheese
• 3/4 cup half-and-half
• 1/2 cup grated Pecorino cheese, divided
• 1/2 cup grated Gruyere cheese, divided
• 1/4 cup chopped fresh sage
• 1 garlic clove, finely chopped
• 1/2 teaspoon salt
• 1/4 teaspoon ground nutmeg
• Freshly ground black pepper to taste