Blueberry Peach Crisp

INGREDIENTS

large ripe but slightly firm peaches, preferably organic, pitted and thinly sliced (no need to peel)

1 pint

blueberries, preferably organic

1 tbsp

freshly squeezed lemon juice

1 3/4 cups

unsweetened blueberry juice (not from concentrate), preferably organic, divided use

1 tbsp

arrowroot powder

2 tsp

pure vanilla extract

salt

2 cups

old-fashioned rolled oats

1 1/2 cups

whole wheat pastry flour

1/4 tsp

salt

1/4 tsp

ground cinnamon

1/3 cup

neutral-flavored vegetable oil

1/2 cup

pure maple syrup, preferably grade B