Food & Cooking Recipes Ingredients Seafood Recipes Penne with Tuna and Red Onion 3.4 (10) 3 Reviews By Martha Stewart Test Kitchen Martha Stewart Test Kitchen The recipes developed by our test kitchen team have undergone a rigorous process of development and testing, ensuring that every element is optimal, from ingredient amounts to method and cooking time. This process includes triple-testing recipes to ensure they meet our high standards. The many stellar cooks and food editors who have been part of our team include Sarah Carey, Lucinda Scala Quinn, Jennifer Aaronson, Shira Bocar, Anna Kovel, Greg Lofts, Riley Wofford, Lauren Tyrell, and Lindsay Leopold. Editorial Guidelines Updated on February 9, 2021 Print Rate It Share Share Tweet Pin Email Prep Time: 15 mins Total Time: 25 mins Servings: 6 The combination of tuna, anchovies, capers, garlic, and parsley is traditional in Mediterranean cooking, particularly in southern France. Ingredients Coarse salt and ground pepper 1 pound penne or other short tubular pasta 2 teaspoons olive oil 1 large red onion, chopped 3 garlic cloves, thinly sliced 1 cup half-and-half 3 anchovy fillets, mashed (optional) 2 cans (6 ounces each) tuna packed in oil, drained ¾ cup chopped fresh parsley 2 tablespoons capers, drained Directions In a large pot of boiling salted water, cook pasta until al dente, according to package instructions; drain, reserving 1/2 cup pasta water. Return pasta to pot. Meanwhile, in a large nonstick skillet, heat oil over medium-low heat. Add onion and garlic; season with salt and pepper. Cook, stirring often, until onion is very tender and starting to brown, about 8 minutes. Add half-and-half and if using, anchovies; raise heat to high, and boil 2 minutes. Pour mixture over pasta. Add tuna, parsley, capers, and reserved pasta water; toss to combine. Season with salt and pepper, as desired. Cook's Notes Anchovy paste, a mixture of anchovies, vinegar, spices, and water, is a mess-free substitute for mashed fillets; use 1 teaspoon of paste for each fillet. Rate it Print