Creating Cozy One-Pot Chicken Marengo is easy if you follow these simple steps:

1. Prepare the Ingredients: Gather all ingredients and chop onion and garlic.
2. Heat Oil: In a large pot or Dutch oven, heat olive oil over medium-high heat.
3. Brown the Chicken: Add chicken thighs skin-side down and sear for about 5-7 minutes until golden brown. Flip and cook for another 5 minutes. Remove and set aside.
4. Sauté Onions and Garlic: In the same pot, add the chopped onion and garlic. Sauté for about 3-4 minutes until softened.
5. Add Tomatoes and Broth: Pour in the diced tomatoes and chicken broth, stirring to combine.
6. Season the Dish: Add thyme, bay leaf, salt, and pepper to the pot. Mix well.
7. Return Chicken to Pot: Place the browned chicken thighs back into the pot, skin-side up.
8. Simmer: Bring the mixture to a gentle boil, then reduce heat to low. Cover and simmer for 30 minutes.
9. Add Olives: After 30 minutes, stir in the sliced green olives. Cover and cook for an additional 10-15 minutes until the chicken is cooked through.
10. Garnish: Once cooked, remove the bay leaf and sprinkle fresh parsley over the dish before serving.

These steps will guide you in creating this incredible one-pot meal effortlessly.