Chicken 'n Dumplings (Crockpot)

4 boneless skinless chicken breasts, cut in small chunks
2 cans condensed cream of chicken soup
1/4 cup onion, finely diced
2 cups water
2 (10 oz) packages refrigerated biscuits
1 chicken bouillon cube

Combine all ingredients, except biscuits, in slow cooker. Cover and cook on low for 5 to 6 hours. 30 minutes before serving, tear biscuit dough into 1-inch pieces. Add to your slow cooker; stirring gently. Cover and cook on HIGH for an additional 30 minutes or until biscuits are fluffed up and cooked through.