Strawberry-Rhubarb Bars

Name: Strawberry-Rhubarb Bars
Cook time: 2 h 45 min
Total time: 2 h 45 min
Cuisine: American
Ingredients: 1 cup chopped nuts (walnuts, pecans, almonds or hazelnuts) or old-fashioned rolled oats, divided; 0.75 cup whole-wheat pastry flour (see Note); 0.75 cup all-purpose flour; 0.5 cup sugar; 0.5 teaspoon salt; 4 tablespoons cold unsalted butter, cut into small pieces; 1 large egg; 2 tablespoons canola oil; 1 teaspoon vanilla extract; 0.25 teaspoon almond extract; 3 cups diced strawberries (fresh or frozen), divided; 3 cups diced fresh rhubarb, divided; 0.25 cup orange juice; 0.5 cup plus 2 tablespoons sugar; 0.25 cup cornstarch