Cook pasta in a large pot of salted boiling water according to package instructions to your desired doneness. While pasta is cooking, proceed with the recipe then add drained cooked pasta to the sauce in step 5.: The boiling water should be rolling and well salted so the pasta seasons from the inside out, which makes a big flavor difference. As the noodles float and begin to ribbon, smell the wheaty aroma that tells you they are nearing al dente, and taste a strand a minute or two before the package time finishes. Draining too early leaves the center chalky, while overcooking makes the noodles collapse and soak up too much sauce. A common mistake is not salting the water enough, which results in bland pasta, so be generous but measured.
Cook Chicken – Cut chicken breasts in half lengthwise and season all sides with 1/2 tsp salt and 1/4 tsp black pepper. Heat a large, deep skillet over medium heat with 2 Tbsp olive oil. When oil is hot, add chicken in a single layer and saute until fully cooked through (3 min per side). Remove from pan and rest 5 minutes, then slice into bite-sized strips.: When you place the seasoned chicken into a hot skillet with 2 tablespoons of olive oil , you should hear an immediate sizzle that creates a golden surface and locks in juices. As the chicken browns, a nutty aroma develops and the edges take on color, which signals readiness. Resting the cooked pieces for five minutes allows the juices to redistribute so the slices stay moist. Avoid crowding the pan, which causes steaming instead of searing, leading to pale, rubbery meat.
Saute Asparagus – Add 2 Tbsp olive oil to the same pan with asparagus pieces. Sautee stirring occasionally for 2-3 minutes or until crisp tender.: The asparagus should hit the hot oil and sizzle briefly, releasing a bright, green scent. Stirring occasionally encourages even browning on the tips and sides, and you want it crisp tender, with a slight give when pierced. The color should turn vivid green and the edges may gain light char marks for flavor. Overcooking will make the stalks limp and dull the fresh flavor, so watch for that quick tender moment.
Make the Sauce – Add 2 cups heavy whipping cream, bring to a simmer and cook 3 minutes, stirring occasionally. Stir in 4 Tbsp pesto then add chicken breasts and cook 2 minutes. Season sauce with 1/2 tsp salt or to taste.: As the cream warms, it will become glossy and begin to thicken, filling the pan with a rich, slightly sweet aroma. A gentle simmer concentrates the flavors without risking separation, and stirring prevents scorching on the pan bottom. When you stir in 4 tablespoons of pesto , it releases a bright herbal perfume that cuts through the cream and lifts the sauce. Adding the sliced chicken back in for two minutes warms it through and allows the meat to absorb some of the sauce. Watch the heat, because boiling too vigorously can cause the cream to split, which ruins the texture.
Combine and Serve – Add cooked pasta, stirring to coat noodles in sauce. Remove from heat and serve right away. Garnish with basil or parsley if desired.: Tossing the drained pasta into the warm sauce lets the noodles capture that glossy coating, and you should see the sauce cling to each strand. Use a gentle folding motion so the asparagus and sliced chicken distribute evenly, and if the sauce seems thick, a splash of reserved pasta water will smooth it to the right consistency. Serve immediately while the dish is warm and aromatic. Leaving the pasta to sit too long will allow the sauce to thicken and cling too tightly, so plate promptly for the best texture.
