01 -
Using a stand mixer, beat the room temperature butter on medium speed for 2 minutes until light and fluffy, scraping down the bowl sides periodically to ensure even aeration.
02 -
Gradually add granulated sugar over 30 seconds while mixing on medium speed. Continue beating until the mixture becomes pale and fluffy. Add eggs one at a time, mixing well after each addition to fully incorporate them without curdling. Blend in vanilla extract until just combined.
03 -
Reduce mixer speed to low and add cake flour in three increments, mixing only until just combined to avoid overworking the batter.
04 -
Using a spatula, gently fold in the heavy cream to maintain batter aeration. The batter should be thick yet spreadable.
05 -
Scoop out 1 cup of batter into a separate bowl. Incorporate the cocoa powder and butterfly pea powder thoroughly until an even vibrant blue color is achieved.
06 -
Grease a bundt pan thoroughly with baking spray. Pour half of the vanilla batter into the pan and smooth the surface. Dollop blue batter evenly over the vanilla layer. Cover with remaining vanilla batter and gently swirl once or twice using a knife to create marbled ribbons without overmixing.
07 -
Preheat oven to 315°F (157°C). Bake the cake for approximately 75 minutes until risen, cracked on top, and a tester inserted into the center comes out clean.
08 -
Allow the cake to rest in the pan for 15–20 minutes before transferring it to a wire rack to cool completely.
09 -
Once cooled, apply a generous layer of cream cheese frosting or drizzle with vanilla glaze. Optionally garnish with sprinkles or edible flowers.