Preheat your oven to 350°F (175°C).
Spray your baking pan with baking spray.
In a large mixing bowl, combine the skim milk, eggs, and melted butter. Whisk until well combined.
In another bowl, mix together the cornmeal, granulated sugar, all-purpose flour, and baking powder. Stir to combine.
Gradually add the dry mixture to the wet ingredients, stirring gently until just combined.
Fold in the grated Parmesan cheese until evenly distributed.
Pour the batter into your prepared baking pan and smooth the top. Bake for about 30-35 minutes, or until a toothpick comes out clean.
Allow the cake to cool in the pan for 10 minutes, then transfer to a wire rack to cool completely before slicing.
