Mocha Hazelnut Shortbread

Ingredients

• 1 1/2 cup (134 grams) hazelnut meal
• 3 cup (360 grams) all-purpose flour
• 1 tablespoon ground coffee or espresso (not instant)
• 1/2 teaspoon baking powder
• 1 cup (170 grams) dark-chocolate-covered espresso beans, roughly crushed with a rolling pin
• 1/2 cup (85 grams) milk chocolate (40% or similar), roughly chopped from a block, or whole chips
• 1/2 cup (71 grams) toasted hazelnuts, skins removed and finely crushed with a rolling pin
• 2 sticks (228 grams) unsalted butter, at room temperature
• 3/4 cup (149 grams) granulated sugar
• 3/4 cup (160 grams) brown sugar
• 1/2 teaspoon fine sea salt
• 1 large egg
• 1 teaspoon coffee liqueur or vanilla extract