French Onion Chicken | Umami

Ingredients

• 3 tbsp butter
• 2 large onions, sliced very thin
• 1 cup broth
• 4 medium chicken breasts
• 1 tsp dried thyme
• 1 tsp salt
• 1 tsp pepper
• 1 tbsp arrowroot powder (or cornstarch)
• 1 cup grated gruyere cheese (mozzarella works as well)