Mixed Berry Crumble Bars

Mixed Berry Crumble Bars

3 cups 1:1 gluten free flour
1 cup sugar
1 teaspoon baking powder
1 teaspoon ground cinnamon
1/2 teaspoon salt
zest of one lemon
1-1/2 cups cold unsalted butter, grated, reserve 1/2 cup
1 egg beaten slightly

4-1/2 cups mixed berries of your choice
(I used blueberries and guava)

4 teaspoons cornstarch
1 teaspoon pure vanilla extract
juice of one lemon
1/2 teaspoon cinnamon
pinch of salt

Yeah, a guava isn't a berry but it was what I had on  hand.
Grease a 9 x 13 glass baking dish. Preheat oven to 375 F.
 Mix first group of ingredients in order, reserving 1/2 cup of butter.
Butter could be cubed and cut in with a pastry cutter.

Mix second group of ingredients and stir well.

Pour half of flour mixture into greased baking dish
and press it all down firmly. Add berry mixture on top.
Spread berry mixture evenly over pressed flour. 
Mix reserved half cup butter with remaining flour mixture.

Mixture will be crumbly. Sprinkle the mixture over the berries.
Bake for 45 minutes till top gets slightly browned.
Let cool, then cut into squares.
Quite sweet and oh so delicious!