Preheat oven to 400 degrees F. Line a large baking sheet with parchment paper or a Silpat and set aside.
In a large bowl, whisk together flour, baking powder, sugar, lemon zest, salt and coconut. Quickly cut in the butter, using your hands, two knives, or a pastry blender. Mix until mixture resembles coarse meal, with a feel larger butter lumps.
In a small bowl, whisk together 1 cup of heavy cream, lemon juice, coconut extract, and vanilla extract. Pour mixture over the ingredients and stir with a spatula until dough begins to form. Don't over mix.
Transfer dough to a floured countertop and knead dough by hand just until it forms a ball. Form scones by patting the dough into a 3/4-inch thick circle. Cut the scones into 8 triangles.
Place scones on prepared baking sheet. Using a pastry brush, brush scones lightly with the additional heavy cream. Bake scones for 15-18 minutes, or until scones are light brown. Cool scones on a wire cooling rack.
While the scones are cooling, make the lemon glaze. In a small bowl, whisk together powdered sugar, lemon zest, and lemon juice. Whisk until smooth. Drizzle glaze over the scones. Top with toasted coconut. Serve!
Note-Scones will keep in an air-tight container for up to 2-3 days, but they really are best eaten the day they are made. I used Meyer lemons, but regular lemons will work too! Lemon juicing tip-roll a room temperature lemon on the counter a few times to maximize the amount of juice.