In a small bowl or liquid measuring cup mix together the sour cream and lemon juice, set aside.
Mix Lemon & Sour Cream
Step 2
Mix together the blueberries and flour, so each blueberry is evenly coated, set aside.
Mix Blueberries
Step 3
Combine sugar, butter, and oil for 3-4 minutes. The mixture should be very thick and fluffy.
Beat Sugar & Fat
Step 4
Add in the first egg and lemon zest and mix until fully combined. Scrape down the bowl then add the next egg.
Add Eggs
Step 5
Gently fold in the dry ingredients into the butter mixture. Then gently fold in the sour cream mixture, and finally the blueberries. You don't want to overmix and over develop the gluten
Combine
Step 6
Bake for 55-60 minutes or until a toothpick inserted in the center comes out clean. Let cool on a wire rack.
Bake
Step 6
In a bowl combine powdered sugar, lemon juice, and lemon juice. Whisk together if the mixture is too thick add a splash of lemon juice at a time until desired consistency.
Make a Glaze
Step 7
In a bowl combine powdered sugar, lemon juice, and lemon juice. Whisk together if the mixture is too thick add a splash of lemon juice at a time until desired consistency.