Boil a large pot of water, salt generously, and cook pasta to al dente, according to package directions. When the pasta is tender, scoop out about 1/2 cup of the water; drain the rest and set pasta aside.
8 ounces pasta
While the pasta cooks, melt 1 Tablespoon of the butter in a large skillet over medium heat. Swirl in the olive oil, then add garlic. Cook for 30-60 seconds, just until fragrant.
2 Tablespoons butter, 2 Tablespoons olive oil, 3-4 cloves garlic
Add white wine or broth and simmer for 1-2 minutes, just until slightly reduced.
1/4 cup dry white wine
Add the remaining 1 Tablespoon butter plus all of the lemon zest, juice from half of the lemon (about 1 - 1.5 Tablespoons), capers, and a big splash of the reserved pasta water. Simmer this together for about 1 minute, then add the drained pasta and toss well. Add more pasta water if desired to make it a little "saucier."
zest and juice of 1 lemon, 1-2 Tablespoons capers
Sample and season with more lemon and salt and pepper to taste—you may not need much or any, because capers themselves are very salty.
kosher salt and black pepper
Sprinkle with parsley just prior to serving. Enjoy!
1-2 Tablespoons chopped fresh parsley