Lemon Blueberry Cake

Name: Lemon Blueberry Cake
Prep time: 15 min
Total time: 15 min
Cuisine: American
Ingredients: 2 3/4 c. plus 1 tbsp. all-purpose flour, divided; 1 3/4 tsp. baking powder; 1/2 tsp. baking soda; 3/4 tsp. kosher salt; 1 3/4 c. granulated sugar; 1 c. vegetable oil; 3 large eggs, room temperature; 3/4 c. buttermilk, room temperature; 1/3 c. lemon juice; 2 tbsp. firmly packed lemon zest, plus more for garnish; 2 tsp. vanilla extract; 2 c. fresh blueberries, plus more for garnish; Nonstick baking spray with flour; 1 8-oz. block cream cheese, softened; 1/4 c. unsalted butter, softened; 1 tbsp. lemon juice; 1 tsp. firmly packed lemon zest; 4 c. powdered sugar