yes- the vaped leftovers are good to cook with. although it is hard to know what exactly the effects are and how strong it is going to be. It depends on what temperature you vaporized at, how much you have, how long you keep the herb soaking in the fat, etc. But don't underestimate the power of that brown shake. Rumor has it, up to 20% of the original THC content is left to be extracted.

Happy baking!