Phase 1: Preparation is Key

1. Cook the Pasta: Bring a large pot of heavily salted water to a rolling boil. Add your pasta and cook according to the package instructions until it is al dente (firm to the bite). This is important as the pasta will cook slightly more when combined with the hot sauce. Before you drain the pasta, carefully scoop out and reserve at least 1 cup of the starchy cooking water. Drain the pasta and set it aside.

2. Make the Homemade Red Pesto (If Using): While the pasta water is heating, prepare your pesto. In the bowl of a food processor, combine the drained sun-dried tomatoes, toasted pine nuts, garlic, grated Parmesan, and fresh basil leaves. Pulse a few times to break everything down. With the processor running on low, slowly stream in the 2 tablespoons of reserved sun-dried tomato oil and the ¼ cup of extra virgin olive oil until the pesto is mostly smooth but still has some texture. Season with salt, pepper, and optional red pepper flakes. Taste and adjust seasoning if needed. Set aside. (If using store-bought pesto, you can skip this step).

3. Prepare the Chicken: Pat the chicken cubes dry with a paper towel. This helps them get a nice brown sear instead of steaming. In a medium bowl, toss the chicken cubes with 1 tablespoon of olive oil, 1 teaspoon of Italian seasoning, 1 teaspoon of salt, and ½ teaspoon of black pepper until evenly coated.

Phase 2: Building Layers of Flavor

1. Sear the Chicken: Heat a large, deep skillet or Dutch oven over medium-high heat. Once hot, add the seasoned chicken cubes in a single layer. Be careful not to overcrowd the pan; cook in two batches if needed to ensure the chicken sears rather than steams. Cook for 3-5 minutes per side, until golden brown and cooked through. Remove the chicken from the skillet and set aside on a plate.

Phase 3: Creating the Creamy Sauce and Final Assembly

1. Start the Sauce: Reduce the heat to medium-low. Add your prepared red pesto (about 1 cup) to the same skillet. Cook for about 1 minute, stirring constantly, until it becomes fragrant. This step “blooms” the flavors in the pesto.

2. Add the Creamy Elements: Slowly pour in the ½ cup of heavy cream, whisking continuously to combine it with the pesto. The sauce will turn a beautiful, creamy terracotta color.

3. Emulsify with Pasta Water: This is the most important step for a perfect sauce. Gradually add about ½ cup of the reserved hot pasta water to the skillet, whisking as you pour. The starches in the pasta water will help the oil from the pesto emulsify with the cream, creating a smooth, velvety sauce that won’t separate or feel oily. Continue to add more pasta water, a splash at a time, until the sauce reaches your desired consistency. It should be thick enough to coat a spoon but fluid enough to coat the pasta.

4. Combine and Serve: Return the cooked chicken and any accumulated juices on the plate back into the skillet. Add the drained pasta as well. Stir everything together gently over low heat until the chicken and pasta are thoroughly coated in the creamy red pesto sauce and everything is heated through.

5. Garnish and Enjoy: Remove from the heat. Taste and adjust seasoning with more salt or pepper if necessary. Serve immediately, garnished with a generous sprinkle of freshly grated Parmesan cheese, a few fresh basil leaves, and some extra toasted pine nuts for crunch.