01 -
Preheat oven to 175°C (350°F). Grease and line a 23×33 cm (9×13 inch) sheet cake pan with parchment paper.
02 -
In a medium bowl, whisk together the flour, baking powder, baking soda, and salt.
03 -
In a large bowl, beat the butter and sugar until light and fluffy, about 3–4 minutes.
04 -
Add eggs one at a time, beating well after each. Stir in the vanilla.
05 -
Alternate adding dry ingredients and buttermilk, beginning and ending with flour. Mix until just combined.
06 -
Pour the batter into the prepared pan and smooth the top. Bake for 28–32 minutes, or until a toothpick inserted in the center comes out clean. Cool completely in the pan.
07 -
Toss sliced strawberries with sugar and lemon juice. Let sit for 30–60 minutes to release juices.
08 -
In a chilled bowl, beat heavy cream with powdered sugar and vanilla until medium-stiff peaks form.
09 -
Spread whipped cream evenly over the cooled cake. Spoon macerated strawberries on top just before serving.