I've got this in the crock pot right now. 
Chuck roast
1 medium onion, chopped
2-3 carrots, chopped
Flour
Oil
Cut roast to be sure it fits into your crock pot.
Coat pieces in flour.
Heat oil and sear roast on all sides.
Place in crock pot.
Add onions and carrots.
Cover with water.
Cook on high for 5-6 hours.
At dinner time, pull out roast and veggies.
Shred roast.
Mix hot water and flour and wisk into remaining liquid in the crock pot to thicken gravy.
I serve this with mashed potatoes.
Chuck roast
1 medium onion, chopped
2-3 carrots, chopped
Flour
Oil
Cut roast to be sure it fits into your crock pot.
Coat pieces in flour.
Heat oil and sear roast on all sides.
Place in crock pot.
Add onions and carrots.
Cover with water.
Cook on high for 5-6 hours.
At dinner time, pull out roast and veggies.
Shred roast.
Mix hot water and flour and wisk into remaining liquid in the crock pot to thicken gravy.
I serve this with mashed potatoes.
