This Blueberry Lemon Upside Down Cake combines a bright lemony cake with a sweet, jammy blueberry topping and is finished with a drizzle of tangy lemon glaze.
Preheat the oven to 350°F and prepare the 9-inch cake pan. Grease the pan and line the bottom with parchment paper.
In a medium bowl, add the sugar and lemon zest. Rub the lemon zest into the sugar with your fingers to release the oil. Add in the blueberries and lemon juice and toss to coat.1/4 cup sugar, 1 Tbsp lemon zest, 2 cups blueberries, 1 Tbsp lemon juice
Add the blueberry mixture to the bottom of the cake pan and spread out into an even layer.
Cream together the butter, sugar, brown sugar, and lemon zest until light and fluffy.1/2 cup butter, 1/2 cup sugar, 1/4 cup brown sugar, 1 Tbsp lemon zest
Add in the eggs and mix. Then add in the milk and lemon extract and mix to combine.2 eggs, 1/2 cup whole milk, 1 tsp lemon extract
In a separate bowl, add the flour, baking powder, and salt and stir to combine.1.5 cups all-purpose flour, 1.5 tsp baking powder,1/4 tsp salt
Add the dry ingredients to the wet ingredients and mix until just combined. Do not overmix.
Add the cake batter on top of the blueberry layer and spread it out evenly with a spatula.
Bake for 45-50 minutes or until a toothpick inserted into the center of the cake comes out clean.
Add the cake to a cooling rack and cool for 15 minutes.
After 15 minutes, run a butter knife around the edges of the cake to help loosen the cake. Take a plate or serving tray on top of the pan and then flip the pan over so that the blueberry layer is on top. Be sure to do this while it is still hot, so it will easily come out of the pan.
Let the cake cool, and when you are ready to serve, mix together the powdered sugar and lemon juice to create the glaze. Drizzle over the top of the cake. Slice and enjoy!1 cup powdered sugar, 2 Tbsp lemon juice
Notes
Be sure to coat the pan well with oil to prevent sticking. I like to use avocado oil that comes in a spray can.
Line the bottom of the pan with parchment paper to ensure the blueberry topping does not stick to the bottom of the pan.
Remove the cake from the pan while it is still hot. If you let it cool too long it will be harder to remove from the pan.
Do not overmix the cake batter. Just stir the flour mixture in until it is just combined. Overmixing causes gluten to develop and creates a tougher cake.