Over Cooking a Roast in the Crock Pot?

Start the roast in the morning as you normally do in the morning without the veggies. Prep the veggies and sit them in cold water in the fridge. When you return home, par boil the potatoes on the stove for a good 15 minutes. Steam the carrots. Sautee the onions. Add them to the roast. All will be well :)