This zucchini pasta gives the squash a caramelized crust first, then builds the cream sauce around the flavors in the pan. I add lemon (in two different ways), fresh basil, and Parmesan. It's the recipe I reach for every summer, without fail.
Bring a large pot of water to a boil and salt generously (I use about 1 tablespoon kosher salt per quart of water).
Put ¼ cup extra virgin olive oil in large (preferably 12-inch) skillet and place over medium-high heat. Add 1 thinly sliced shallot and arrange the lemon halves cut-side down in the pan. Cook the shallots until they're soft and beginning to brown on the edges, 3-5 minutes, stirring occasionally.
Add 2 medium zucchini sliced into 2-inch sticks, ½-inch thick to the pan and sprinkle with 1 teaspoon salt and plenty of freshly ground black pepper. Stir the zucchini into one layer. Cook 5 minutes without disturbing, or until the zucchini is nicely browned on one side.
Pour 1 cup heavy cream into the pan and stir in 2 cloves grated or finely chopped garlic and ¼-½ teaspoon crushed red pepper Bring the cream to a boil and cook 5 minutes, until it looks reduced and thickened.
Meanwhile, cook the pasta until al dente, according to the package directions. Drain.
Remove the skillet from the heat. Using tongs, squeeze the juice from the cooked lemons into the sauce, then discard them. Add the zest of one lemon, ½ cup grated Parmesan cheese, and drained pasta to the pan. Combine the pasta with tongs or two wooden spoons until it melds with the sauce.
Sprinkle ¼ cup fresh basil leaves over the pasta and serve, with additional grated cheese on top.
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Notes
To make the sauce without cream, replace it with 1 cup of chicken or vegetable broth diluted with 2 tablespoons cornstarch.
Choose zucchini that are smaller than 2-inches in diameter — larger sized squash usually contain more interior seeds and can taste bitter.