In a mixing bowl big enough to hold both your prepared vanilla pudding and cake mix, mix together until completely combined. It will be a very thick batter.
Spoon your cake mix mixture into a lightly greased 6 quart slow cooker or casserole crock pot and spread it out with the center a little lower than the edges. (It is paramount that you know that your slow cooker does not cook hot. If it does, the outside edges will burn before the middle is done cooking.)
Sprinkle the butterscotch chips and pecan pieces evenly across the top of your batter.
Cover and cook on high for 1 hour and 15 minutes to 2 hours and 15 minutes, turning your insert halfway through cooking. It is done when the center is set.
Use oven mitts to remove your insert and place it on a hot pad to cool for 10-15 minutes before serving.
Notes
Make sure you are using a crock pot that does not cook hot. In a crock pot that cooks hot, the edges will burn before the center can finish baking.
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As with any of our recipes, carb counts, calorie counts and nutritional information varies greatly. As a result, your nutritional content depends on which products you choose to use when cooking this dish. The auto-calculation is just an automated estimate and should NOT be used for specific dietary needs.
All slow cookers cook differently, so cooking times are always a basic guideline. Recipes should always be tested first in your own slow cooker and time adjusted as needed.