To prepare crust: Combine 3/4 cup nuts (or oats), whole-wheat flour, all-purpose flour, sugar and salt in a food processor; pulse until the nuts are finely ground. Add butter; pulse until well incorporated.
Whisk egg, oil, 1 teaspoon vanilla and almond extract in a small bowl. With the motor running, add the mixture
to the food processor. Process, then pulse, scraping down the sides, if necessary, until the mixture begins to clump, 30 to 45 seconds (it will look crumbly). Measure out 1/2 cup of the mixture and combine in a bowl with the remaining 1/4 cup chopped nuts (or oats). Set aside for the topping.
Preheat oven to 400 °F. Generously coat a 9-by-13-inch baking dish with cooking spray.
To prepare fruit filling & assemble bars: Combine 2 cups dried fruit, cider, sugar and cornstarch in a large saucepan. Bring to a simmer over medium heat, stirring constantly, until the mixture is very thick, 4 to 5 minutes. Stir in the remaining 1 1/4 cups dried fruit and 1 teaspoon vanilla.
Transfer the dough to the prepared baking dish. Spread evenly and press firmly into the bottom to form a crust. Spread the fruit filling over the crust. Sprinkle the reserved topping over the filling.
Bake the bars for 15 minutes. Reduce oven temperature to 350 ° and bake until the crust and topping are lightly brown, 25 to 30 minutes more. Let cool completely before cutting into bars, at least 1 1/2 hours.
Make Ahead Tip: Cover and refrigerate the crust and topping (Steps 1-2) for up to 1 day. Cover or individually wrap and refrigerate the cooled bars for up to 5 days.
Tip: Lower in protein than regular whole-wheat flour, whole-wheat pastry flour is milled from soft wheat and has less gluten-forming potential, making it a better choice for tender baked goods. You can find it in the natural-foods section of large supermarkets and natural-foods stores.
Easy cleanup: Dessert pans can be a headache to clean. Skip the soaking and scrubbing by lining your pan with parchment paper before you bake.
243 calories;9 g fat(2 g sat); 3 g fiber; 40 g carbohydrates; 3 g protein; 24 mcg folate; 17 mg cholesterol; 14 g sugars; 0 g added sugars; 711 IU vitamin A; 1 mg vitamin C; 19 mg calcium; 1 mg iron; 74 mg sodium; 240 mg potassium