Step 1

Place the chicken breasts into the slow cooker.

Step 2

Spread over the chopped chipotle pepper in adobo over the chicken.

Step 3

Sprinkle over the salt, pepper, oregano and garlic.

Step 4

Pour over the fire-roasted tomatoes.

Step 5

Add the sliced onions.

Step 6

Place the lid on the slow cooker.

Step 7

Cook on HIGH For 4 hours or on LOW for 6-8 hours.

Step 8

When the cooking time is done, shred the chicken. Do this by taking two forks and pulling the meat. You can do this right in the slow cooker.

Step 9

Serve and enjoy!