Blueberry Lemon Butter Cake is a light and slightly sweet cake the combo of blueberry and lemons is perfect to serve as dessert or breakfast
Put the butter, lemon cake mix , and egg into a large bowl. Beat with an electric mixer for one to two minutes.
Pour the cake mixture into a well greased 9 x 13 baking dish.
Drizzle the lemon curd over the lemon cake batter (warming the lemon curd in the microwave for a few seconds will help make it more drizzle-able).
Drizzle the sweetened condensed milk over the lemon curd.
Toss the blueberries with the sugar and lemon juice in a bowl and let sit for a few minutes.
Place the blueberries evenly over top of the batter. Bake in a 350 degree oven for 38 to 42 minutes.
Sprinkle with powdered sugar before serving.