Break ground beef up into smaller pieces in the slow cooker.
Season with salt, pepper and garlic powder. It can be tricky to know how much, especially if you’re doing 5-8 pounds of meat at a time. Just guess. You can always add seasoning after it cooks.
Cook on low for 6-8 hours. I found it took the full 8 hours for me.
Drain. Use the biggest strainer that you have - or maybe do half at a time.
Let cool and package into smaller portions into freezer bags (don't forget to label the bags).
To freeze, I lay the packages onto a cookie sheet (so that they lay flat), freeze them overnight, then I can stack them in the freezer any way that I want.