Gregg was nice enough to do the grocery shopping for me while I was out. He came back with smaller cans of coke. You only need one can but because these were tiny, I used one-and-a-half.
Crockpot-Cola Beef and Yorkshire Pudding
1 Pot Roast (mine weighed just over 3 lbs.)
1 packet onion soup mix
1 can condensed mushroom soup
1 Can Coca-Cola
2 teaspoons cornstarch
Yorkshire Pudding - recipe follows
Cooking time: 10 hours on low in slow-cooker (crockpot).
Put pot roast into the slow cooker and top with the onion soup mix, the mushroom soup and coca-cola. Cook for ten hours on low but one hour before it is finished mix the two teaspoons of cornstarch with a small amount of water and pour into the crockpot. Stir it in a little and put the cover back on. It is as simple as that.
I hope I haven't missed any steps but you can always check Gill's recipe here.