Coconut and buttermilk make such an excellent combination. I got this recipe from Martha Stewart's website and loved it from the first bite. Moist, and delicious flavor. The coconut is not overpowering at all. It was all gone by the end of the evening!
Here is the recipe:
1 1/2 sticks unsalted butter, room temperature, plus more for pan
2 cups all-purpose flour (spooned and leveled), plus more for pan
Preheat oven to 350 degrees. Butter and flour a 4 1/2-by-8 1/2-inch loaf pan. Whisk together flour, baking powder, and salt. In a large bowl, using a mixer, beat butter and granulated sugar on medium-high until light and fluffy, 8 minutes, scraping down bowl as needed. Add vanilla, then eggs, one at a time, beating well and scraping down bowl. With mixer on low, add flour mixture in 3 additions, alternating with two 1/2-cup additions buttermilk, and beat until combined. With a rubber spatula, fold in 1 1/4 cups coconut.
Transfer batter to pan and bake until a skewer inserted in center comes out with a few moist crumbs attached, 60 minutes. Let cool in pan on a wire rack set in a rimmed baking sheet, 1 hour. Remove cake from pan and let cool completely on rack. (Store at room temperature, wrapped in plastic, up to 4 days.)
Whisk together confectioners' sugar and remaining 2 tablespoons buttermilk. Drizzle over cake and sprinkle with remaining 1/4 cup coconut. (I skipped this part due to lack of time.)