Creating Slow Cooker Tom Kha Gai is straightforward when following these step-by-step instructions:

1. Prepare the Slow Cooker: Begin by setting up your slow cooker and making sure it’s plugged in.
2. Add the Broth: Pour the chicken broth into the slow cooker as the base for the soup.
3. Add Coconut Milk: After the broth, carefully stir in the coconut milk, mixing well.
4. Combine Aromatics: Add the chopped lemongrass, galangal slices, kaffir lime leaves, and smashed chilies to the pot, ensuring they are submerged.
5. Add Chicken: Place the bite-sized chicken pieces on top of the broth and coconut milk mixture.
6. Incorporate Vegetables: Add the sliced mushrooms, cherry tomatoes, and onions, stirring gently to mix.
7. Season: Pour in the fish sauce (or soy sauce) and season with salt and pepper according to taste. Avoid over-seasoning at this point as it can be adjusted later.
8. Cover and Cook: Secure the lid on the slow cooker. Set the timer for 4 to 6 hours on low heat or 2 to 3 hours on high heat.
9. Finish with Lime Juice: Once cooked, add fresh lime juice before serving to enhance the flavors.
10. Garnish: Top with freshly chopped cilantro for an added burst of flavor and color.

By following these steps, you will have a delicious and aromatic Tom Kha Gai that everyone will adore.