Spinach Pesto Pasta with Chicken Sausage Ingredients: Kosher salt 10 ounces rigatoni 4 cups baby spinach (about 3 ounces) 2 tablespoons extra-virgin olive oil, plus more for drizzling 2 tablespoons chopped almonds Finely grated zest of 1 lemon, plus the juice of 1/2 lemon 1/4 teaspoon red pepper flakes 2 tablespoons grated Parmesan cheese,