1 pound fusilli con buco or other long pasta
3 tablespoons unsalted butter
1 garlic clove, minced
2 1/2 cups freshly grated parmigiano-reggiano, plus more (optional) for serving
1 cup mascarpone cheese, at room temperature
2 teaspoons grated lemon zest
1 1/2 cups frozen peas, thawed
1 tablespoon freshly squeezed lemon juice
1 teaspoon pink peppercorns, ground