Berries and Cream Crumble Bars

INGREDIENTS

For shortbread crust::

2 sticks

unsalted butter, cut into small chunks

1/4 cup

brown sugar

1/2 tsp

kosher salt

2 cups

all purpose flour

For filling::

1/2 cup

berry jam (I used mixed berry but strawberry, blueberry, or raspberry would all be great)

2 cups

blueberries

1 qt

strawberries, hulled and sliced

12 oz

cream cheese, softened

1/4 cup

sour cream

1/4 cup

sugar

eggs

1 tsp

vanilla

For crumbs::

1 stick

butter, melted

1 cup

flour

1/4 cup

white sugar

Zest of 1 lemon (optional)

1/4 tsp

salt