Right now, you get the same amount of EXP for each recipe cooked. A complex recipe, like the jams, gives the same amount of EXP as a simple recipe, like the fish. There's no benefit to cooking the more complex recipes; you don't get better EXP gains, the stamina difference is negligible, and they take up significantly more space than the simple recipes. You should be getting more EXP for cooking the complex recipes.

I agree with this. There's little reason to make complex recipes when I could just be feeding the ingredients to my wolves instead.

Support. This makes a lot of sense.

It is not true that each recipe gives the same amount of xp. The veggie platter, for example, gives 16 xp. The pumpkin pie, IIRC (I haven't cooked it in a while) gives 11xp, whereas cooked meat gives only 3. Yes, cooking jam also gives only 3xp, and I think particularly that specific recipe could use some work, not just because of the low xp, but also because the result (the jam) gives the same amount of stamina als all of its individual ingredients combined (Which makes it absolutely useless to spend time cooking it)

That being said, I've also made a huge Professions rebalancing suggestion a while ago, and mentioned there that they need to make sure that both the stamina payout, the time it takes to cook, and the xp payout need to be balanced and according to level requirements.. And, in order to make cooking the bigger recipes actually worth it, I personally believe that the cooking pot size should determine the number of cooking results, rather than the ingredients going in. For example, my cooking pot size is 24. That should mean I could cook 24 pumpkinpies, not 4 as it does now (because each requires 6 ingredients)