Gather your ingredients: thinly slice 4 garlic cloves and the zucchini into thin (1/8-inch) slices. Measure the olive oil, butter, and the cream.
Bring a large pot of water to a boil. I love using my pasta pot with the removable insert. When the water is boiling, add a good amount of kosher salt
Add one pound of your chosen pasta to the boiling water, stirring it into the water.
While the pasta cooks, in the Dutch oven, add 1/4 cup extra-virgin olive oil over medium heat.
Add the 4 thinly sliced garlic cloves and stir until golden around the edges, about 3 minutes
Add the zucchini slices, kosher salt, and ground black pepper. Increase the heat to high, stirring occasionally, until the zucchini is tender, about 8 minutes.
Using tongs, drain and transfer the pasta to the Dutch oven with the zucchini.
Add about 3/4 cup of pasta water* to the zucchini (reserve the rest of the pasta water).
Stir the cream and butter into the zucchini in the Dutch oven. Reduce the heat to medium.
Cook stirring constantly to combine the zucchini and pasta, about 2 minutes. The dish will begin to thicken.
Remove the Dutch oven from the heat and let cool 5 minutes.
Add about a cup of fresh basil and the grated Parmigiano Reggiano to the Dutch oven; stir constantly until the cheese melts and combines with the other ingredients.
If necessary, add more pasta water*, 1/4 cup at a time. You want to maintain the creamy consistency
Season with kosher salt and fresh black pepper
Plate the zucchini pasta on pasta bowls; garnish with more grated cheese and sliced fresh basil.