"Re Fried" Beans in the Slow Cooker

I've been wanting to try and make my own re fried beans for some time now. I found a recipe that I thought would be simple and since it received great reviews, I decided to give it a try. They were so good! Everyone loved them! This recipe makes enough to freeze some for later use.
Recipe courtesy of AllRecipes.com

Ingredients:

1 onion, peeled and halved 3 cups dry pinto beans, rinsed 1/2 fresh jalapeno pepper, seeded and chopped 2 tablespoons minced garlic

5 teaspoons salt 1 3/4 teaspoons fresh ground black pepper 1/8 teaspoon ground cumin, optional 9 cups water

Directions:

1.	Place the onion, rinsed beans, jalapeno, garlic, salt, pepper, and cumin into a slow cooker. Pour in the water and stir to combine. Cook on High for 8 hours, adding more water as needed. Note: if more than 1 cup of water has evaporated during cooking, then the temperature is too high.
2.	Once the beans have cooked, strain them, and reserve the liquid. Mash the beans with a potato masher, adding the reserved water as needed to attain desired consistency.