Grandma Carver's Meat and Gravy

1 1/2 lbs. stew meat
1/2 c. onion, chopped
2 cans cream of chicken soup
2 beef bouillon cubes
1 c. water
salt and pepper
Dissolve bouillon in water and combine with chicken soup. Put meat, onion, and soup mixture into a Crockpot and cook for 6 hours. Remove meat from gravy and set aside. Combine 1 Tbsp. flour and 2 Tbsp. water and whisk until smooth. Whisk into gravy. Season to taste with salt and pepper. Serve the meat on the side or return to the gravy.