Preheat oven to 350ºF and line a 9x9 baking pan with parchment paper overlapping sides. Lightly grease with cooking spray. Set aside.

Combine ingredients for apple filling in a large skillet over medium-low heat. Cook stirring occasionally until apples are softened and liquid in the pan is thickened, 8-10 minutes. Cool for 10 minutes.

While filling cools, combine ingredients for crust/topping in a large bowl. Mix well to moisten using clean hands or a fork. Reserve ½ cup of mixture to use for topping. Mixture should be crumbly but stick when squeezed. If mixture is still too dry, add an extra 1-2 tablespoons of water.

Press remaining mixture into the bottom of prepared pan using moist fingertips. Top with apple filling and spread evenly over crust. Sprinkle with reserved crumble topping and bake for 30-35 minutes, until top is golden brown.

Cool in pan completely before slicing into 9 bars.

Add 1 bar to 9 snack container compartments. Divide yogurt between remaining compartments. Refrigerate until serving