1 In a medium size saucepan melt butter over medium-high heat. 2  Add crushed garlic and whole sprigs of rosemary to the saucepan. 3  Add scallops, cook for 2 minutes on each side (or until desired consistency). 4  Remove the garlic and rosemary from pan.ook. Ready In. 1  In a medium size saucepan melt butter over medium-high heat. 2  Add crushed garlic and whole sprigs of rosemary to the saucepan. 3  Add scallops, cook for 2 minutes on each side (or until desired consistency).