brownie mix plus the ingredients listed on the back
buttercream butter + powdered sugar
a mini muffin pan (or several) depending on how many cauldrons you want to make
green food coloring (I used Leaf Green Wilton Gel Food Coloring – you can find it at Michaels)
green round sprinkles. I found both the large and small ones at Michaels. They come in a small plastic rectangle shaped bag.
pretzel sticks, if you’re wanting to add a “stir spoon” to your cauldrons