Double the Streusel Apple Butter Bars

1. Preheat the oven to 350 degrees F. Line a 9x13 inch baking dish with parchment paper.2. In the bowl of a food processor, pulse together the flour, oats, pecans, brown sugar, baking powder and cinnamon, until the oats are mostly ground. Add the cold butter, pulse until a crumbly dough forms. If the dough seems dry, add 1 tablespoon water.3. Press 1/3 of the dough into the bottom of the prepared baking dish. Transfer to the oven and bake 10 minutes or until lightly golden.4. Meanwhile, make the filling. In a medium bowl, toss the apples with the maple syrup, flour, cinnamon, nutmeg, and vanilla. Spread the apple butter evenly over the pre-baked crust. Arrange the apples in an even layer over the apple butter. Sprinkle the remaining 2/3 streusel dough over top of the apples. Lay the butter sliced over the streusel. Return to the oven and bake for 30-40 minutes or until the crumble is a light golden brown. 5. Let cool completely before cutting into bars. Keep stored in a sealed container for up to 1 week.