I never thought I would recommend eating a cake for breakfast, but this Blueberry Muffin Cake with Cinnamon Sugar is actually a big muffin, shaped as a cake, so totally legal to eat early in the morning.
Butter a 6″ springform (bottom and sides) or use parchment paper for the bottom and only butter the sides.
Mix flour, sugar, baking powder and salt in one bowl. Mix egg, butter, milk and vanilla in another bowl.
Add wet ingredients to the dry ingredients until incorporated.
Add the blueberries and fold these into the batter.
Pour the batter into the springform and tap the form on the counter to get rid of any air bubbles.
Place the cake in the oven and bake for 50-55 minutes or until a toothpick comes out clean. Allow to cool for about 10 minutes.
Take the cake out of the form. You may need to use a spatula around the edges. Be careful as the cake is still warm and can easily break. Brush top and sides with melted butter.
Sprinkle top with the cinnamon sugar and use your hands to press the cinnamon sugar onto the sides of the cake.
Cut and serve or allow the cake to cool to room temperature.