Grease a 9" x "13" pan with butter, shortening or lard.
Melt the butter in a non-stick saucepan using low heat. Do not allow to boil. Remove saucepan from the heat and allow it to cool slightly.
1 cup unsalted butter
Add eggs and sugar to the butter in the saucepan and stir until the mix is creamy. This is why you want the saucepan to cool a little. If you don't, the eggs will scramble.
2 eggs, ½ cup granulated sugar
Stir in ancho powder, cocoa powder, cinnamon, vanilla, flour, baking powder, and salt. Stir until the mix is smooth.
½ cup all-purpose flour, ⅓ cup dark cocoa powder, 1 teaspoon vanilla extract, ½ teaspoon cinnamon, ¾ teaspoon ancho powder, ¼ teaspoon salt, ¼ teaspoon baking powder
Slowly pour the mix into a greased pan making sure it is evenly distributed.
Place the pan in the oven and bake for 20 minutes .
If you are strong of will, let those puppies cool on a rack for 10 minutes.