Step 1

Place the red onion, water, olive oil, ancho chile powder, garlic, adobo sauce, salt, pepper, oregano and cumin in a blender or food processor.

Step 2

Blend until you have a mostly smooth mixture.

Step 3

Pour the marinade into a large bowl or resealable gallon sized bag. Add the chicken and coat with the marinade.

Step 4

Refrigerate the chicken for at least 1 hour, or up to 12 hours.

Step 5

Remove the chicken from the marinade. Heat a grill over medium high heat, or preheat the oven to 400 degrees F.

Step 6

Grill the chicken for 7-8 minutes per side or until a thermometer registers at least 165 degrees F.

Step 7

OR bake the chicken for 20-25 minutes until cooked through.

Step 8

Let the chicken rest for 5 minutes. Cut into slices or cubes, then serve immediately.