He did this on his YouTube channel and it looked amazing and simple. Much better than many of the pot roasts end up on the videos. Gotta Try this!!!!
1 14.5 ounce can stewed tomatoes
1 cup cola
1 cup beef broth
1 packet dry spaghetti sauce mix
1 chopped onion
2 stalks of celery, chopped
1 1/2 teaspoons salt
1/2 teaspoon garlic powder
3 pounds chuck roast
2 tablespoons vegetable oil
Carrots and potatoes, cut up
Season the outside of the roast on both sides with salt, pepper and garlic powder. Set your pressure cooker to brown and add oil. When hot, brown your chuck roast on both sides. Remove the roast and set the pressure cooker and add onions and celery to the pot. Saute, veg, but you don’t have to. Add the tomatoes with their juice, cola, broth, and spaghetti sauce mix. Stir well until mix is dissolved.
Add the roast to the pressure cooker. Set the pressure cooker to high for 30 minutes. RELEASE PRESSURE MANUALLY. Add the carrots and potatoes, set the pressure cooker to high for 15 more minutes. RELEASE THE PRESSURE MANUALLY.
Found at: http://thebeardedhiker.com/