Nanaimo Bars. – My mom’s special!

You will need: 1 cup (16 tablespoons)(1/2 pound) unsalted butter, softened (and divided) 1/2 cup granulated sugar, divided 5 tablespoons unsweetened cocoa powder 1 extra-large egg, at room temperature, lightly beaten 2 cups graham cracker or ‘nilla wafer crumbs, finely ground 1 cup shredded coconut (sweetened or unsweetened – I used unsweetened) 1/2 cup coarsely…