This is a longtime favorite recipe from David Lebovitz. It was published in Fine Cooking years ago, and I think I've made it 1,000 times. I finally have my method down, which is reflected in the recipe below. Pastry dough yields 2 rounds. Don't halve the recipe. Freeze the other round or keep it in the fridge for 3 to 5 days. Frangipane can be made up to a week in advance. Double the recipe if you are making 2 galettes. Use 1 egg for a double recipe.