Preheat oven to 350°F. Grease two 8-inch round cake pans and set aside.
Make the batter: In the bowl of an electric mixer, combine sugar, flour, and baking powder. With the mixer running on medium-low, add butter 1 tablespoon at a time. Mix until the ingredients have a sandy texture. In a measuring cup or bowl, mix the egg, milk, and vanilla extract. With the mixer running, add the milk mixture to the dry ingredients and mix until no dry streaks remain. Evenly distribute the batter between the prepared cake pans.
⅔ cup granulated sugar, 2 cups all-purpose flour, 1 tablespoon baking powder, ⅓ cup unsalted butter, 1 large egg, 1 cup whole milk, 1 teaspoon vanilla extract
Bake in the preheated 350°F oven for 20-30 minutes, until just slightly golden and a wooden skewer inserted comes out clean. Remove from the oven and cool in the pans for 10 minutes. Then invert onto a cooling rack and cool until completely cooled.
While cooling, prepare the whipped cream: Whip cream cheese until light and fluffy. Add heavy cream, sugar, vanilla extract, and orange zest. Whip until the cream reaches stiff peaks.
Assemble the cake: Place one cooled cake on a plate. Top with approximately 1 cup of whipped cream mixture. Spread evenly and top with one layer of sliced strawberries. Top with the second cake round, pressing slightly to adhere. Then add another cup of cream mixture. Finish with more berries. On this final layer, take more time to assemble, as this is the final presentation.