I choose to cook this in my u003cstrongu003eu003ca href=u0022https://amzn.to/2wSek4iu0022 target=u0022_blanku0022 rel=u0022noreferrer noopener sponsored nofollowu0022u003ecasserole slow cookeru003c/au003eu003c/strongu003e because the final dish looks more like a traditional oven-baked casserole. However you can easily cook this in a 6 quart or larger oval slow cooker and the recipe will be great. You may find that you have extra tater tots that won't fit in a single layer on to of the casserole but that is OK. You can just save them for another meal.