So I got this cheap Runtz strain shatter or it used to be shatter for $5 a gram. It was 630mg of THC each so 1890mg total. Start preheating your oven to 240F.
I froze the shatter in the freezer then scraped it off the parchment paper, it was more of a budder at this point than a shatter which is why it was so cheap. But using a knife and a dab tool I was able to carefully scrape it off the terpene soaked parchement paper it was packaged on. And onto a new piece of parchment paper with the sides folded so nothing runs out, on a cookie sheet.
Then I cooked it up at 240F for 40 minutes to decarboxylate it, to activate it so you get high from eating it. This is around 1800mg of THC. The max allowed commercial edible in OR is 50mg.
After the 40 minutes was up I carefully sat the parchment paper flat in my freezer so as not to run all over the place and let the oil freeze for 20 minutes or so while the butter melted…
After the butter melted using the double boiler method, I picked up the shatter with the tip of the spoon and dropped it into the butter. I then used the spoon to pick up any remaining specks of oil by pressing it to the oil so it sticks to the spoon. After the butter is completely melted and you collect all of the oil stir the oil into the butter. I used a little more butter than most recipes called for I think, like half a stick and I took a slice of it to butter the glass pan I put them into.
After the butter was melted I poured it over around 12-13oz of marshmallows and melted them into the butter on low heat… then after the butter and marshmallows had become one and mixed up properly I stir in 2/3-3/4 a box of rice krispies… trying to spread the marshmallow butter mixture evenly throughout everything.
I poured the rice krispies into a large buttered glass casserole dish and with a sandwich bag over my hand smashed and compressed them down evenly into the pan.
Then I cut them up into 35 2x2 squares.
1800mg divided by 35 = roughly 51mg each.