Plum-Lime Upside Down Cake

Directions

• Place a rack in the middle of the oven; preheat to 350 degrees F. Lightly butter a 9" round cake pan and dust with AP flour. Line the bottom of the pan with parchment paper. Arrange the plum wedges in the pan in a fun and interesting pattern (round works great).
• Whisk 1 tsp baking powder, 1-1/2 cups APF, 1/2 tsp salt together in a bowl. Combine lime zest and 1-1/2 cups of sugar (300 g) and rub together with your fingers until the mixture is fragrant and well mixed. Add butter to the sugar/lime mix and cream in with an electric mixer for approx. 3 minutes. Add the eggs one at a time until they are well incorporated. Add vanilla extract and beat for 10 seconds. Reduce mixer speed to low and add the dry ingredients until well mixed. Add milk and mix until just combined.
• Bring the remaining 100 g of sugar and the rest of the salt to a boil in a small saucepan over medium heat. Carefully add the lime juice, and stir until deep amber in color (5-7 minutes). Immediately pour the mix evenly over the plums in the cake pan. Add the batter and smooth it over.
• Bake cake until golden brown and tested in the usual matter. Cool the cake on a wire rack while still in the pan.
• De-pan the cake using an offset spatula and some patience.