Rhubarb Berry Crisp

INGREDIENTS

2 cups

chopped rhubarb

2 1/2 cups

mixed frozen berries (I used blackberries, blueberries, and raspberries)

1/2 cup

granulated sugar

1 tbsp

orange zest

1 tbsp

fresh orange juice

1/2 tsp

vanilla extract

1 tbsp

cornstarch

1 1/2 cups

cup old-fashioned oats (use gluten-free oats for gf)

1/2 cup

white whole wheat flour (or flour of your choice, use gluten-free flour for gf)

1/2 cup

packed brown sugar

3/4 tsp

ground cinnamon

1/4 tsp

salt

6 tbsp

butter, melted

Ice cream or whipped cream for serving, optional