I have gastroparesis because MS pinched my Phrenic nerve and my vagus nerve, so frequently things just sit in my tummy and go nowhere, OR they come back out the way they came. Its not fun.
Have you done a google search for good MJ recipes? I know you MUST have some fat in the batter, like a MELTED butter to churn it into before you mix it into the brownies in order for the THC to be relased. If you just clump it into the mix its like eating brownies with leaves in it, not good! Peanut butter cookies are great! the higher the fat content the better. it really does help to melt the butter, then grind in the stuff into your butter to make it a paste, and then add that paste to your recipe.
http://www.thestonerscookbook.com/ho..._with_weed.php
http://www.thecannabischef.com/all_recipes
http://www.marijuanacooking.com/ (really good spot to learn how to make Weed Butter which is essential to a batter that is smooth and good tasting)
http://www.smokingwithstyle.com/cookingetiquette.htm (easy to follow stuff)
That should give you a good idea on how to better handle the ingredients and make them into whatever dish you choose.
Good luck