Ingredients:
Flatten chicken breasts to ½" thickness with a flat-sided meat tenderizer. Season with salt and pepper.
Heat olive oil in a skillet over medium-high heat. Add chicken breasts and sauté about 3-4 minutes each side until cooked through.
Transfer chicken to a cutting board, cover, and let rest.
In the same skillet over medium-high heat, add a splash of olive oil if needed.
Add onion and garlic. Sauté until the onion is tender and slightly browned.
Add vodka and scrape the pan to release any browned bits to deglaze.
Stir in crushed tomatoes, heavy cream, oregano, and crushed red pepper.
Bring everything to a gentle boil. Then reduce heat to medium-low and simmer about 10 minutes to thicken sauce, stirring as needed. This also cooks off the alcohol.
While the sauce is simmering, bring a large pot of water to boil for the pasta.
Add sea salt to the boiling water, then add penne pasta. Cook according to package instructions.
Slice the rested chicken into ½" thick pieces.
When pasta is almost done, add Parmesan cheese to the sauce, continue heating to incorporate, stirring as needed.
Drain pasta, reserving ½ cup cooking liquid. Briefly rinse the pasta with cool water to stop it cooking.
Add cooked penne to vodka sauce and allow to heat through, stirring as needed. Add splashes of the reserved pasta water as needed to adjust sauce consistency.
Add sliced chicken to the vodka sauce and pasta mixture.
Stir everything together. Add salt and pepper to taste.
Serve warm, garnished with chopped fresh oregano or parsley and additional Parmesan cheese if desired.
