1-First Step: Gather all ingredients and pat the 4 boneless chicken breasts dry with paper towels. Season both sides generously with 2 tbsp Cajun seasoning, plus salt and pepper to taste. This dry brine locks in moisture for tender results in your creamy Cajun chicken. Let sit 5 minutes while you slice 1 red bell pepper, 1 small onion, mince 3 garlic cloves, and grate ½ cup Parmesan. Mise en place saves time, especially for busy parents.

2-Second Step: Heat 2 tbsp olive oil or butter in a large skillet over medium-high heat. Add chicken breasts; sear 5-6 minutes per side until golden brown and internal temperature hits 165°F. Work in batches if needed to avoid crowding. Remove chicken to a plate; it will finish cooking in the sauce later. This step builds fond for richer flavor in your one pot creamy Cajun chicken pasta recipe.

3-Third Step: In the same skillet, lower heat to medium. Add sliced bell pepper and onion; sauté 3 minutes until softened. Stir in minced garlic for 1 minute until fragrant, avoiding burn. Deglaze with a splash of chicken broth if sticking. These veggies add crunch and nutrition to your Cajun seasoning chicken.

4-Fourth Step: Pour in 1 cup heavy cream and ½ cup chicken broth. Bring to a simmer over medium heat for 5 minutes, stirring occasionally as it thickens slightly. Whisk in ½ cup grated Parmesan until fully melted and smooth. Taste and adjust salt, pepper, or Cajun spice. For dairy-free, coconut milk works here seamlessly.

5-Fifth Step: Return seared chicken to the skillet, nestling into the sauce. Spoon sauce over tops. Cover and simmer 5-7 minutes until chicken reaches 165°F internally. If adding mushrooms or spinach, toss in now for 2 minutes.

6-Final Step: Remove from heat. Garnish with chopped fresh parsley or green onions. Let rest 2 minutes for sauce to set. Serve over rice, pasta, or cauliflower rice to make it a full Cajun chicken pasta or one pot chicken pasta. Total time: 25-30 minutes. Serves 4 at about 500 calories each.