Cook your pasta of choice according to the package directions in salted water. (Reserve 1 1/2 cups of the cooking water.)
While your pasta is cooking, wash and slice the zucchini into 1 cm thick slices.
In a large skillet over medium-low heat, add 2 tablespoons of oil, 4 cloves of minced garlic, and sprinkle with salt and spices.
Sauté the zucchini over medium-low heat for about 12-15 minutes, stirring every minute or two to avoid burning, until the zucchini becomes translucent.
Reserve 1 1/2 cups of pasta cooking water before draining your cooked pasta.
Place the sauteed zucchini in a blender with 1/2 cup of the reserved pasta water and blend for 30 seconds. Slowly add in the remainder of the pasta water until the desired consistency is reached.
Add the pasta to the large skillet and coat well with the zucchini pasta sauce.
Add salt, black pepper, or red pepper flakes to taste if needed, and serve hot.
Notes
For a more flavorful sauce, add 2 tablespoons of nutritional yeast when blending the zucchini.