For the cookie base:
4 ounces (1 stick) unsalted butter
1/4 teaspoon salt
3 1/2 ounces (1/2 cup) raw brown sugar or organic sugar
6 ounces (1 1/2 cups) whole-wheat pastry flour, sifted

For the sesame-coconut layer:
1 ounce (1/4 cup) whole-wheat pastry flour
1/2 teaspoon baking powder
2 eggs
1/2 cup mild honey, like clover
1 teaspoon vanilla extract
1 1/2 ounces (1/2 cup, firmly packed) unsweetened shredded coconut