This classic Italian comfort dish delivers rich, rustic flavor with minimal effort. Let your slow cooker do the work for tender, fall-off-the-bone perfection.
Season the chicken thighs generously with salt and black pepper on both sides. If you have time, sear them skin-side down in a hot skillet with a drizzle of olive oil for 3 to 4 minutes until the skin is golden. This step is optional but adds great flavor.
Place the sliced onion, bell peppers, mushrooms, and minced garlic in the bottom of the slow cooker.
In a bowl, stir together the crushed tomatoes, red wine, tomato paste, dried oregano, dried basil, and red pepper flakes. Pour this sauce over the vegetables.
Nestle the chicken thighs into the sauce skin-side up, pressing them down so they are mostly submerged.
Cover and cook on low for 6 to 7 hours or on high for 3 to 4 hours. The chicken should be incredibly tender and nearly falling off the bone.
Carefully remove the chicken thighs and set aside. Give the sauce a good stir and taste for seasoning, adjusting salt and pepper as needed.
Serve the chicken over a bed of spaghetti, polenta, or crusty bread, spooning plenty of the chunky vegetable sauce over the top. Garnish with fresh basil leaves.