For the filling: Whisk the eggs in a large bowl, then add the white and brown sugar, sour cream, flour, salt, orange zest and vanilla extract. Gently fold in the berries and pour the mixture over the crust. Scatter the remaining flour mixture evenly over the filling and bake 35-45 minutes.
03Cool for 1 hour before cutting into bars. Serve with fresh whipped cream, cold ice cream, or just eat straight from the pan!
04Recipe Note: I only added a small amount of orange zest, because I didn’t want to overpower the fresh berries. If you want more orange flavor, add more zest.