Roasted Cauliflower with Pecorino and Mint Recipe

Ingredients

• 4 tablespoons unsalted butter
• 1 small head cauliflower, cut into florets
• 0.5 teaspoon kosher salt, plus more to taste
• 0.5 cup thinly sliced red onion
• 0.25 cup finely grated Pecorino Romano cheese
• 10 leaves fresh mint, cut into thin strips
• 1 tablespoon lemon juice