Ingredients:

  • 3 cups (375g) all-purpose flour
  • 2 cups (400g) granulated sugar
  • 1 tbsp (12g) baking powder
  • 1 tsp (6g) fine sea salt
  • 1 cup (225g) unsalted butter, softened and cubed
  • 4 large eggs, room temperature
  • 1 cup (240ml) full-fat buttermilk
  • 1 tbsp (15ml) vanilla bean paste
  • 2 tbsp (30ml) vegetable oil
  • 1 cup (240ml) egg whites
  • 2 cups (400g) granulated sugar
  • 2 cups (450g) unsalted butter, softened and cubed
  • 1 tsp (5g) salt
  • 2 tsp (10ml) vanilla extract
  • royal blue gel food coloring
  • white gel food coloring
  • 8 oz (225g) white fondant
  • 4 oz (115g) royal blue fondant
  • cornstarch

Instructions:

  1. Preheat oven to 350°F (175°C) and line a 12x18 inch half sheet pan with parchment paper leaving an overhang.
  2. Mix flour, sugar, baking powder, and salt; incorporate cubed butter until the mixture resembles wet sand.
  3. Slowly beat in eggs, buttermilk, and vanilla until the batter is smooth and pale.
  4. Pour batter into the pan and bake for 30-35 minutes until a toothpick inserted in the center comes out clean.
  5. Cool the cake completely, then use a serrated knife to shave off any imperfections on top.
  6. Wrap the cake in plastic wrap and chill in the freezer for 30 minutes.
  7. Prepare Swiss Meringue Buttercream by whipping egg whites and sugar, adding softened butter, salt, and vanilla extract.
  8. Apply a thin crumb coat of buttercream and chill for 20 minutes, then apply the final layer of frosting using a bench scraper.
  9. Pipe a heartbeat EKG line across the center using royal blue frosting and a round tip.
  10. Roll out fondant to 1/8 inch thickness, cut out a stethoscope and nursing cap, and press them onto the cake.
  11. Pipe 'Congrats, RN!' or customized graduation text in a bold script.