Chocolate-Peanut Butter Oat Bars

Preheat oven to 350 degrees F (175 degrees C). Line bottom of a 9-inch square baking pan with foil. Lightly coat with cooking spray.

For crust, pulse flour, oats, pecans, white sugar, coconut, brown sugar, and salt in a food processor until blended. Add butter; pulse until mixture resembles wet sand.

Spoon three-fourths of oat mixture (about 4 1/2 cups) into the prepared pan. Press into an even layer. Transfer remaining one-fourth of mixture to a small bowl; using your hands, squeeze and rub mixture together until crumbly. Spread streusel on a rimmed baking sheet.

Bake both pans, stirring streusel halfway through, until streusel is golden, about 18 minutes. Remove streusel from oven. Bake crust until golden brown, about 12 minutes more.

Meanwhile, for filling, microwave chocolate chips and peanut butter in a medium microwave-safe bowl on High in 30-second intervals, stirring after each interval, until mixture is melted and fully combined.

To assemble, pour chocolate mixture over baked crust. Sprinkle with streusel. Chill until set, 2 to 3 hours. Cut into 20 bars.