First Step: Prep the oven and panPreheat your oven to 350°F (175°C). Grease an 8 ½ by 4 ½ inch loaf pan and line it with parchment paper for easy removal and clean edges. If desired, sprinkle coarse sugar on the edges or top of the pan to add a subtle crunch after baking.

Second Step: Combine dry ingredientsIn a medium bowl, whisk together the flour, baking powder, and salt. This step ensures an even distribution of leavening agents and seasoning for balanced flavor.

Third Step: Cream butter and sugarIn a large bowl, beat the softened butter and granulated sugar using an electric mixer on medium speed until light and fluffy, about 3-5 minutes. This aerates the batter to create a tender crumb.

Fourth Step: Add eggs and vanillaAdd the eggs one at a time, mixing well after each addition to incorporate fully. Stir in 1 teaspoon of vanilla extract to start building the cake’s aromatic base.

Fifth Step: Incorporate dry ingredients and milkAlternately add the flour mixture and milk to the butter mixture, beginning and ending with flour. Mix gently and only until combined to avoid overworking the batter, which helps maintain a light texture.

Sixth Step: Divide and flavor the batterWeigh the batter and divide it into three equal portions (roughly 7 oz or 200 grams each). In one bowl, mix melted chocolate, cocoa powder, and vegetable oil for the chocolate batter. In the second bowl, stir in the strawberry Jell-O powder or freeze-dried strawberry powder and optional strawberry extract. Leave the third bowl as the vanilla batter, adding remaining vanilla extract.

Seventh Step: Layer and swirl the battersSpoon dollops of each batter alternatively into the prepared loaf pan to create colorful layers. Use a butter knife or skewer to gently swirl the batters together, ensuring the swirls reach the bottom. Be careful not to overmix to retain distinct colors.

Eighth Step: Bake and coolBake the cake for about 45 minutes to 1 hour or until a toothpick inserted in the center comes out with moist crumbs. To avoid over-browning, tent with foil during the last 10-15 minutes if necessary. Let the cake cool in the pan for 20 minutes, then remove and transfer to a wire rack to cool completely before slicing.

Final Step: Serve and enjoySlice the neapolitan loaf cake into neat pieces and serve as is or with fresh whipped cream and berries. This loaf pairs beautifully with the savory flavors of a steak and shrimp stir fry for a well-rounded meal experience.