Preheat the oven to 400°. Line 2 large baking sheets with parchment paper. In a food processor, pulse the ground almonds and hazelnuts to blend. Pulse in the sugar. Add the butter and honey and process until blended. Add the egg whites and salt and process just until completely incorporated. Scape the dough into a bowl and roll tablespoons of it into balls. Roll each ball in the pine nuts, pressing lightly to help them adhere.