Melt butter in a pan over medium heat. Cook leeks for 8 to 10 minutes, stirring regularly. Add cream. Salt and pepper.
With a blender, reduce crackers into breadcrumbs. Add Parmesan.
Meanwhile, heat olive oil in another pan over medium-high heat. Salt and pepper the scallops. Cook the scallops for 2 minutes on each side. Transfer to a plate and cover with aluminum foil. Set aside.
Heat the same pan on medium heat. Cook the cracker crumbs for 30 seconds, stirring.
Divide the melted leeks into plates. Garnish each plate with 3 scallops. Sprinkle the scallops with crackers and breadcrumbs. If desired, garnish with mustard microgreens.
Did you know that...
1 package of sliced leeks contains the equivalent of 2 whole leeks.