1. 1. In a large bowl, season boneless skinless chicken with salt and pepper. Coat the chicken in flour.

2. 2. In a skillet, heat butter over medium heat. Add the chicken and cook until browned and cooked through. Remove from the skillet and set aside.

3. 3. In the same skillet, add shallots, white onion, green bell pepper, and orange bell pepper. Cook until vegetables are tender-crisp.

4. 4. In a separate bowl, mix beef broth, chicken broth, creamy peanut butter, honey, and spaghetti sauce. Pour the mixture over the vegetables in the skillet.

5. 5. Add the cooked chicken back to the skillet and stir to combine all ingredients well.

6. 6. Serve the peanut butter chicken stir-fry over cooked spaghetti or rice, garnished with steamed brussels sprouts if desired.

7. 7. Enjoy your delicious peanut butter chicken stir-fry!