01 -
Warm olive oil and butter in a large skillet or Dutch oven over medium-high heat.
02 -
Pat chicken thighs dry with paper towels to remove excess moisture. Season with salt and pepper, then brown in the heated fat until golden on both sides.
03 -
Sprinkle dried basil and oregano over the chicken and sauté for an additional 30 seconds.
04 -
Transfer chicken to a plate. In the same pan, cook shallots and minced garlic over medium heat until softened and fragrant, about 1 to 2 minutes.
05 -
Add sliced mushrooms to the pan and sauté for 1 to 2 minutes until tender.
06 -
Sprinkle flour evenly over the mushroom mixture and cook for 1 to 2 minutes to eliminate raw flour taste.
07 -
Pour in white wine or chicken broth, scraping up browned bits from the pan bottom. Simmer gently for 2 to 3 minutes until slightly reduced.
08 -
Return chicken to the pan. Add diced tomatoes with juice and diced red bell pepper. Stir to combine.
09 -
Bring to a gentle simmer, then reduce heat to low, cover, and cook for 20 minutes, stirring occasionally. Add water or broth if sauce is too thick or dry.
10 -
Adjust seasoning with salt and pepper. Serve hot over spaghetti or pasta of choice. Garnish with parsley if desired.