Prepare molds by buttering and flouring them. Use soft not melted butter and apply it with a brush. It will coat the inside of the mold more thickly.
To flour the molds, apply a thin coat of flour and tap it around in the mold so all surfaces are covered. Then turn the mold over and rap it smartly against the work surface to knock out excess flour.
After cookies baked in molds emerge from the oven, let them stand a minute or two, then unmold them and arrange them right side up on racks to cool.