Spaghetti with Spinach, Peas, and Herbed Ricotta

In a bowl, combine ricotta, lemon zest and juice, and basil; season with salt and pepper. Heat oil in a large skillet over medium. Add onion and garlic; cook, stirring, until softened, 6 to 8 minutes. Add spinach; season generously and cook, stirring, until just wilted, about 2 minutes.

Meanwhile, cook pasta in a pot of salted boiling water 2 minutes less than per package instructions. Add peas; cook 1 minute more. Reserve 1 cup pasta water; drain. Add pasta, peas, and 3/4 cup ricotta mixture to skillet.

Reduce heat to low and stir, adding enough reserved pasta water to create a silky sauce; season to taste. To serve, dollop pasta with remaining ricotta mixture, drizzle with more oil, and sprinkle with basil leaves.