Cook the Pasta

1. Boil Water: In a large pot, bring salted water to a boil.
2. Add Pasta: Cook the spaghetti or linguine according to package instructions until al dente. Reserve 1 cup of pasta water, then drain the rest.

Prepare the Garlic Shrimp

1. Heat the Oils: In a large skillet, combine 4 tablespoons of olive oil and 4 tablespoons of unsalted butter over medium heat.
2. Sauté Garlic: Add the minced garlic and red pepper flakes (if using). Sauté for about 1 minute until fragrant, being careful not to burn the garlic.
3. Add Shrimp: Add the peeled and deveined shrimp to the skillet. Season with salt and black pepper. Cook for 2-3 minutes until the shrimp are pink and opaque.

Combine Pasta and Sauce

1. Add Lemon Juice: Squeeze in the juice of 2 lemons and add the lemon zest to the skillet. Stir to combine.
2. Mix with Pasta: Add the drained pasta to the skillet, tossing to coat the pasta in the garlic-lemon sauce. If the pasta seems dry, add reserved pasta water a little at a time until desired consistency is reached.
3. Add Parsley: Stir in the chopped parsley for freshness.

Serve

1. Plate the Dish: Divide the Garlic Shrimp Lemon Pasta among serving plates.
2. Garnish and Enjoy: Top with grated Parmesan cheese if desired, and serve warm.