Strawberry-Rhubarb Crisp on BakeSpace.com

Ingredients

• 10 stalks rhubarb, roughly chopped
• 1 pint strawberries, roughly chopped
• 1/2 cup sugar
• 1 orange, zested and juiced
• 1 tsp vanilla extract
• 1 1/2 cups flour
• 1 1/2 cups rolled oats
• 3/4 cup brown sugar
• 1 cup (2 sticks) butter, softened
• 1/2 tsp salt
• 1/2 tsp cinnamon
• 1/2 cup walnuts, chopped (optional)