Step 1

Cook spaghetti until al dente according to package instructions, reserving 1 1/2 cups of the cooking water.

Step 2

When pasta has about 5 minutes left to cook, heat 2 tablespoons of the olive oil in a large, non-stick skillet over medium heat. Add garlic, broccoli and kosher salt; cook and stir until broccoli is tender and garlic is lightly browned, about 5 minutes (see recipe note #1 for softer broccoli). Add cooked pasta, remaining 2 tablespoons of olive oil, red pepper flakes and 1/2 cup of the reserved pasta water (plus more as desired); cook and stir until heated through, 2 to 3 minutes. Season to taste with salt and pepper. Transfer to serving bowl and sprinkle parmesan cheese evenly over the top; serve.