I designed this pie in the jar years ago. In fact, I made this for a 3 in pie tin and it was to small. So I looked around and found it fit a mason jar, so I named it pie in the jar! Today is is still one of my favorites. This heart tart is great on top of a pie, in a small mouth jar or as a soap. I am working on many soap molds and this one is just the right size for a soap. If you fill the middle after de-molding it looks fabulous.