Whisk together measured dry mix, yeast and liquids in mixing bowl, stirring to combine, then increasing mixer speed to medium-high and continuing to beat for 2 minutes.
Oil a piece of parchment larger than the bottom of the slow cooker (see photos above for reference). Spread out the pizza dough to approximately the size of the bottom of the crock pot. Oiling your hands well will help keep the dough from sticking.
Place the parchment with the dough on it into the slow cooker, then spread the dough out again, pressing it one inch up the sides. Spread shredded cheese, then sauce and toppings, then more cheese, if you like.
Place a paper towel large enough to cover the entire crock pot on top, so it drapes over the sides, then place the lid on top.
Set the slow cooker to HIGH and set timer for 2 1/2 hours, or if you're using your slow cooker for the first time and you're unsure of how hot it cooks, set it for 2 hours the first time and test, since you can always add more time.**
To check for doneness after cooking, stick a toothpick into the crust to make sure it is clean, not wet. If you prefer the crust and cheese to be browner on top, remove the parchment with pizza on top and place on a baking sheet in the oven on broil for 2-3 minutes before serving.