nah mate, i did this recently on a small scale with regular kitchen stuff and it was awesome. You need the regular mixing ingredients for cookies plus: large pan, butter, weed, a sieve, a spoon and a pint glass. Half fill the pan with water and bring to a rolling boil (more than simmering but not boiling over!). Add 30g of butter (thats a generous ounce for the imperial users, adjust as per recipe) and wait for it to melt. Then grind up about 2 grams of buds and stir it in. 2 grams in this case is based on making 8 cookies, so 0.25g bud each cookie. For ultra potency use 3.5 grams of bud, that works out at just over 0.4g per cookie. This is considered a high dose.
Stir regularly for 10-15 minutes, the water and butter should turn greenish. Once you are bored/satisfied you have stirred enough, place the sieve over the mouth of the pint glass and pour the contents of the pan through the sieve into the glass. Make sure the glass is big enough to hold all the liquid from the pan! You should now have a murky glass of slowly separating mess. Let it cool down then put it in the fridge overnight. There's no point rushing this to get some quick cannabutter cookies, make the butter the night before and let it cool properly in the fridge. The next morning the butter should be a hard disc on the top of the water in the glass. Use a knife to separate it from the sides of the glass and get it into the mixing bowl. Microwave gently until very soft, then stir in with regular cookie recipe.
Cooking the cookies will be much the same, make sure the recipe heat stays under 200(C) or 400(F), if its above that cook it at 200 (or 400) for a few minutes longer than stated. And voila! Psychoactive cookies! Enjoy!