1-First Step: Get the pan and oven ready Preheat your oven to 350°F and grease a 9×13-inch baking pan well. If you want easier release, dust the pan lightly with flour too. This step matters because the cake bakes into a tender sheet, and a good pan setup helps it lift out cleanly after cooling. Set out all your ingredients before you begin. Since the batter comes together quickly, having everything measured first makes the whole process smoother. This is especially helpful for busy parents and first-time bakers.

2-Second Step: Mix the dry ingredients Sift the flour into a medium bowl. Add the baking powder and salt, then whisk them together so the leavening is evenly distributed. Sifting also helps break up lumps, which gives the cake a finer texture. Keep this bowl nearby, because you will add it in stages. That gradual method helps prevent over-mixing, which is one of the biggest mistakes in a traditional Mexican cortadillo cake.

3-Third Step: Build the wet mixture In a large mixing bowl, combine the eggs, vanilla extract, sugar, and orange zest. Mix on low speed for about 2 minutes until the mixture looks well blended and slightly lighter. Then pour in the cooking oil and mix for about 30 seconds more. If you are using the optional yellow food coloring, add 3 to 4 drops at this stage. The batter should have a soft golden tint, but the color is only for appearance. The flavor comes mostly from the vanilla and fresh orange zest, so using fresh zest gives the best result.

4-Fourth Step: Add the flour and milk in stages Add half of the flour mixture to the wet ingredients and mix just until combined. Pour in the milk, then add the remaining flour mixture. Stir until the batter is smooth, but stop as soon as the ingredients are blended. Do not over-mix. A gentle hand keeps the crumb fluffy and soft instead of dense. If you are measuring flour by volume, spoon it into the cup and level it off rather than scooping straight from the bag.

5-Fifth Step: Bake the cake Transfer the batter into the prepared pan and spread it evenly with a spatula. Place the pan on the middle rack of the oven and bake for about 45 minutes. The cake is ready when a toothpick inserted in the center comes out clean. Ovens can vary, so start checking near the end of baking time. If the top is browning too quickly, keep an eye on it during the last 10 minutes. The finished cake should be set, lightly golden, and spring back when touched.

6-Sixth Step: Cool before frosting Let the cake cool completely in the pan. This is important because warm cake can melt the icing and make it run off the sides. Cooling also helps the crumb settle, which makes cutting easier later. If you are in a hurry, place the pan on a wire rack to speed things up. Still, give it enough time so the top feels cool to the touch before you move to the frosting stage.

7-Seventh Step: Make the icing In a bowl, mix the confectioner’s sugar, milk, and neon pink food coloring until smooth. You want a spreadable icing that is thick enough to stay in place but soft enough to glide across the cake. If it looks too thick, add a little more milk, one teaspoon at a time. For a slightly less sweet frosting, add a tiny splash of citrus juice or reduce the sugar a bit. That small change gives the icing a brighter edge without changing the classic look too much.

8-Eighth Step: Frost, decorate, and slice Spread the icing over the cooled cake while it is still in the pan. Sprinkle your decorations on top while the icing is wet so they stick well. Let the icing set for about 30 minutes before cutting into squares. That resting time helps the frosting firm up and makes cleaner slices. Serve your cortadillo cake with milk, coffee, or hot chocolate for the most classic pairing.