Blueberry Peach Crisp

Ingredients

• 3 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 cup unsweetened blueberry juice (not from concentrate), preferably organic, divided use
• 1 Tbsp arrowroot powder
• 2 tsp pure vanilla extract
• pinch of 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