Ingredients
For the crust
1/2 cup unsalted butter, cold
1 cup all-purpose flour (or gluten-free all-purpose flour)
3/4 teaspoon kosher salt (although the original recipe calls for 1/2 tsp. - I like the little extra kick of salt)
1 cup apricot or plum jam
For the filling
3 tablespoons unsalted butter, room temperature
1 1/4 cups sugar
6 large eggs, separated
1/2 pound toasted, ground walnuts (make sure you cool them before you grind them in a food processor - they can be a little chunky)