Preheat your oven to 350°F (175°C).
In a large bowl, combine maize flour, all-purpose flour, sugar, baking powder, and salt. Mix well.
In another bowl, whisk together the melted butter, milk, eggs, and vanilla extract (if using).
Pour the wet ingredients into the dry ingredients. Stir until just combined, making sure not to overmix.
Pour the batter into a greased baking dish.
Bake in the preheated oven for 25-30 minutes, or until a toothpick inserted into the center comes out clean.
Allow the Chigumu to cool in the pan for a few minutes before transferring to a wire rack to cool completely.
Enjoy your meal!