Preheat oven to 350 degrees F.
Combine oats, flour, salt, baking soda, and baking powder in a large bowl.
In a separate small bowl, add honey, tahini, and apple butter. Microwave for 15-30 seconds and stir to combine.
Pour honey mixture over the dry ingredients and stir until combined.
Spray a 9x13 baking pan with olive oil. Press remaining oat mixture into the bottom of the prepared pan.
Spread a thin layer of jam on top of the pressed oat mixture.
Scatter sliced strawberries on top of jam-covered oat mixture.
Bake for approximately 25-30 minutes until the edges are golden brown. Allow to cool completely before cutting. I like to cool mine in the refrigerator for a few hours before cutting.
Store bars in the refrigerator or freezer. For crispier bars, toast in the air-fryer or conventional oven before serving.