Add and stir all the filling ingredients in a microwave safe bowl. Microwave them in 30 seconds increments. Stir in between. This should take about 2-3 minutes.
When the filling gets slightly thick. it is ready. Let the filling come to room temperature, while you prepare the base of bars.
Preheat oven to 325°F (163°C) and 8x8 square baking pan with aluminium foil or parchment paper with enough overhangs on the sides. This step will aid easy removal of bars.
In a medium/large bowl combine oats, cinnamon, nut butter, apple butter, vanilla, honey and egg. Stir till everything is mixed well.
Reserve ¾ Cup of the prepared mixture to crumble for top layer.
Press the oats mixture in prepared baking pan (saving ¾ cup for topping).
Next add and spread room temp strawberry filling over oats mixture.
Crumble remaining oats mixture and chocolate chips over strawberry filling. Press the topping lightly into the filling so it all sticks together.
Bake for 25-30 minutes. The topping will appear slightly brown at this point.
Allow to cool down before cutting. You can also stick them into refrigerator for 15-20 minutes if you want them to cool down faster!