Fettuccine al Limone | La Cucina Grandinetti

Ingredients

• 2 tablespoons extra-virgin olive oil
• 1 medium red onion, thinly sliced
• 1 teaspoon red pepper flakes
• 3 jalapenos, seeded and cut into thin slivers
• Zest and juice of 3 lemons
• 8 tablespoons (1 stick) unsalted butter
• Salt and freshly ground black pepper
• 1-1/4 pounds basic pasta dough, cut into fettuccine
• 1/2 cup freshly grated pecorino romano