I was thinking that you could actually cut tofu and take a central wedge out of it, to hollow it out then place the garlic butter inside (or any other stuffing) before putting it back together. aussie tofu might work better for this though. the other option would be something like 2 thick slices with suitable hollow made then assembled and something like roasted red pepper used to hold it together, cost in breadcrumbs... I have ideas but don't know how feasible they are.
Tempeh is more textured like chicken but less inclined to give that dryness associated with turkey. it makes for better texture variation in burgers and salads. sorry to tired to convey what I mean. I'll try again tomorrow if this is not making any sense. overslept by 2 hours today due to oh not being at work. alarm went off for my meds at 6am,and we both feel back to sleep immediately and it wasn't until 8-8:30am that we awoke and realised we had better get up and they was only for a call of nature waking us! must do better tomorrow, he actually had to go to work again!