Suggest allowing to completely cool before removing from the small muffin tins.
I put mine in the fridge after cooled to room temperature to ensure that they came out easily.
The idea of infusing melted butter ~ why not try ginger ? Sky is the limit!
These decadent lavender brownies infused with cocoa are adapted from from The FRY Cocoa tin. Original recipe calls for 2 cups sugar but I used 1 cup and found these to be delightful!