I have finished all the birds I have already from last season, but my favorite way it was done by far was as follows;
Layered shaved (thin sliced lengthwise with a mandolin)zuchini in a bread pan kinda like a big turine mold, then a layer of thin sliced grouse breast meat about 1/2" or so, then I cut Portabello mushrooms to fit the pan and made a good layer out of them, then a layer of sundried tomatoes on top of that, then a layer of feta cheese (strained) then I filled the rest of the pans up with a stuffing similar to what I would use in a turkey but without the sausage and less spice, more of an Italian herbed stuffing, cover with a few more Zuchini strips and a little parm cheese. Baked in the oven, I think it was around 350 for 45 minutes or so. It was awesome, I stole the idea from a friend who works in the kitchen at Pan Pacific and once told me about a stuffed Turkey breast, just changed a few lil things and it worked out great.