01 -
Preheat oven to 175°C. Grease a 23 cm round cake pan and line the base with parchment paper.
02 -
Combine melted butter and brown sugar in a small bowl, then spread evenly over the base of the prepared pan. Arrange rhubarb and strawberries on top in an even layer.
03 -
In a medium bowl, whisk together flour, baking powder, and salt. Set aside.
04 -
In a large bowl, beat softened butter and granulated sugar together until light and fluffy.
05 -
Beat in eggs individually, mixing well after each addition. Stir in vanilla extract.
06 -
Alternate adding the flour mixture and milk to the batter, starting and ending with the flour mixture. Mix gently until just combined.
07 -
Carefully spread the batter over the fruit layer in the cake pan. Bake for 40–45 minutes, or until a skewer inserted into the center emerges clean.
08 -
Let the cake cool in the pan for 10–15 minutes. Invert onto a serving plate, remove parchment paper, and allow to cool slightly before slicing.