The best out-and-out bushcrafty meal I had was the breast meat of a crow, wrapped with a little butter in wild garlic and wrapped again in a giant burdock leaf. It was slow roasted under the embers of a fire and was delicious, served with a potato baked in the embers.
Apart from that, pretty much anything filling works for me though it's hard to beat a full English breakfast. Somehow, it just tastes better when you're out in the wilds.