I had just made Tofurkey in a slow cooker this Thanksgiving (Crock Pot is the same thing, but the Rival company owns that name). I decided to experiment, since I have made the Tofurkey in the oven as the package directions say to do in the past, but it was always too dry even if I basted it. So I took my thawed Tofurkey and placed it in the slow cooker. I added the basting ingredients that they suggested on the package: olive oil and soy sauce and sage, putting the full amount on the Tofurkey and not half now and half later as the directions on the package say. Then I cut up potatoes, carrots, celery, onions, mushrooms and added a bit more oil and soy sauce and more sage and some tarragon. I surrounded the Tofurkey with the vegetbles and even covered the top of the Tofurkey with veggies. I turned the slow cooker on high and it was done in about 3 hours. I didn't stir it or anything, just put it all in the slow cooker and let it cook. You might need to experiment with the times and whether you want to slow cook on high or low. Some cookers cook faster than others.
Anyhow, it was the moistess and most delicious Tofurkey and veggies I had eaten. The veggies came out great too! This is how I will cook Tofurkey from now on. My husband said it was the best he ever ate and loved how moist it came out. I don't think you need to inject it with the basting, as it really stays moist.
Now you all can try this next Thanksgiving or during the December holidays. Bon Appetite!