1 stick (1/2 cup) unsalted butter, room temperature
1 1/4 cups packed light-brown sugar
1 large egg, room temperature
1 teaspoon pure vanilla extract
1/2 cup chopped bittersweet chocolate
1/2 cup chopped roasted almonds
1/2 cup sweetened shredded coconut
Instructions
In a medium bowl, whisk together flour, cocoa, and salt.
In the bowl of a mixer fitted with the paddle attachment, beat butter with brown sugar on medium-high speed until light and fluffy, about 5 minutes.
Add egg and vanilla; beat on medium speed just to combine. Reduce speed to low and slowly add flour mixture, beating until combined. Fold in chocolate and almonds.
Shape dough into a 1-inch-thick disk, tightly wrap in plastic, and refrigerate at least 1 hour and up to 1 day.
Preheat oven to 350 degrees.
Place coconut in a shallow dish. Scoop 2 tablespoons (about 1 ounce) dough and form into a ball; roll in coconut to coat. Repeat with remaining dough. Place balls on parchment-lined baking sheets, 1 inch apart; press each lightly to flatten.
Bake until cookies are cracked but still slightly soft, 16 to 18 minutes. Let cool 5 minutes on sheets, then transfer to a wire rack and let cool completely. Cookies can be stored in an airtight container at room temperature up to 5 days.