Crockpot Collard Greens

1 1/4 lb. smoked ham hocks, or you can use sliced smoked sausage, ham, or bacon
2 cans chicken broth
2 lbs fresh collard greens, washed and chopped with veins removed
1/2 c. sweet onion, chopped
2 T. light brown sugar
2 T. apple cider vinegar
2 t. salt
1 t. crushed red pepper
1/2 t. black pepper

Combine all ingredients in lined crockpot. Cover and cook on low for 9 hours. Remove ham hocks and all bits of bone before stirring greens. Cool ham hocks and remove all fat & bone. Return meat to crockpot. Stir and serve.