Melt the butter in a heavy pan. Add sugar and lemon juice and zest (taste at this point and adjust for desires sweetness/sourness). Add Grand Marnier and bring to a boil. Reduce heat, fold crepes in fourths, and arrange in sauce. Spoon sauce over crepes.
Warm the brandy (10 seconds in the microwave) and place in a long-handled metal ladle. Ignite the brandy and pour over crepes while flaming.
Note: to double, use slightly less than 2x the Grand Marnier and brandy.
Melt the butter in a saucepan. Add the lemon juice, oil, and sugar, adjusting sweetness to taste. Add the Grand Marnier and bring to a boil. Cool the sauce, fold the crepes in quarters, and arrange in pan. Warm the brandy slightly, ignite, and pour over crepes.
From the Dinner Co-op