If you'd prefer to try something other than ganache, these donuts work well with buttercream. In particular, dulce de leche buttercream is a great accompaniment to chocolate donuts. A half batch of my recipe should be sufficient for 12 baked donuts (dependent on the amount you want to use). Similarly vanilla buttercream is always a staple frosting in my house. Alternatively, try a glaze of powdered sugar with coffee for a mocha baked donut.