Risotto in a Lemon Cup

INGREDIENTS

• 2 cups low-sodium chicken broth
• 2 tablespoons butter , plus 1 tablespoon
• 1 large shallot, diced
• 1 cup Arborio rice
• 1/2 cup dry white wine
• 2 tablespoons grated Parmesan, plus 2 tablespoons
• 2 tablespoons mascarpone cheese
• 1/2 a lemon, zested amd juiced
• 3/4 teaspoon kosher salt
• 3/4 teaspoon freshly ground black pepper
• 6 lemons , for serving