Cake

• Preheat oven to 350 degrees Fahrenheit and line the bottom of an 8 inch springform pan with parchment paper. If you are greasing the pans with spray, make sure to NOT overspray otherwise the sides/edges of the cake will brown/crisp up because of the excess fat from the spray. Set pan aside.
• For the blueberries: In a small bowl, toss together the blueberries and lemon zest. Set aside.
• For the streusel: In another small bowl, whisk together the granulated sugar and all purpose flour. Pour in the melted butter and mix until the mixture resembles wet sand. Set aside.
• For the cake: In a medium-sized bowl, whisk together the cake flour, baking soda and salt. Set aside.
• In a medium-sized bowl or the bowl of a stand mixer fitted with the paddle attachment, beat the butter and oil together on medium-high speed until completely combined. This will only happen if the butter is fully at room temperature. About 2-3 minutes.
• With the mixer on low speed, stream in the granulated sugar then beat on medium speed until combined and fluffy. 1-2 minutes.
• Add the eggs, one at a time, mixing well on low speed in between each addition, scraping down the sides and bottom of the bowl as necessary. I normally scrape the sides and bottom after every egg addition. Add the vanilla extract and lemon extract (if using) and mix on low-medium speed until combined.
• With the mixer on low, add half of the dry ingredients. Once almost fully incorporated, add half of the milk and mix until almost combined. Repeat this with the other halves of the dry ingredients and the milk. Do not over mix.
• Pour the batter into your prepared pan. Sprinkle the blueberries on the cake batter in an even layer, gently patting them into the cake batter with your hand. Sprinkle the streusel on top of the blueberries and lightly pat it into the cake batter as well. Bake for 40-45 minutes - the streusel will be golden and the blueberries will be bubbling. A toothpick inserted into the center of the cake will come out clean. Let cool in the pan for 5 minutes, then transfer to a cooling rack to cool completely.