I tried using an apple peeler/corer, but it was just a huge mess and it peeled more apple away than I liked. So, I just did it with a knife and potato peeler. It went pretty quickly.
Slow Cook Apple Butter
Apples - I used 8 small Red Delicious, peeled, cored, and sliced
2 1/2 cups sugar
2 tsp. cinnamon
1/2 tsp allspice
1/4 tsp cloves
1/2 tsp nutmeg
dash of salt
1/2 cup water
Mix all together in a 4 Quart Slow Cooker and cook overnight on low. You could also cook during the day, but you need a good 10-15 hours or longer. I've heard some people cook for 24 hours. However, I used my emulsion wand blender to mix it all up after about 10 hours and it turned out perfectly. Place in jars (or Tupperware) and cool completely before placing a lid. I filled 2 medium jars. Keep refrigerated for 2-3 weeks.
Mine turned out a little spicy, so I adjusted the amount of cloves and nutmeg before posting this. You should experiment with the amounts to adjust to your own liking. I was worried that it would be runny (the Publix one was) but once it cooled, it was nice and thick. I may try to cut back on the sugar with the next batch, or use honey instead. Hmmm, I wonder what different apples would taste like? Time to try out some more. Enjoy!