• Preheat the oven to 350 F or 325 F if baking on convection.
• Place a rack in the center of the oven.

Apple Filling

• Peel, core and chop the apples into 1/2" chunks.
• Add apples, lemon juice, and sugar to a bowl and toss. Set aside.

Dough/Streusel

• Use the paddle attachment, on medium/low speed, to mix all dough ingredients in the bowl of a stand mixer until just combined.

Assemble

• Line a 9x13 pan with a 9 x 18 piece of parchment paper.
• Spread 2/3 of the dough into the base of the pan.
• Press firmly to pack the dough into the pan and use the bottom of a measuring cup or offset spatula to smooth it out.
• Pour the apple mix over the base and spread evenly.
• Crumble the remaining dough over the apples to create the streusel.

Bake and Serve

• Bake on the middle rack for 1 hour. If not baking on convection, rotate the pan 180 degrees after 30 minutes to make sure it bakes evenly.
• Check the bars after 45 minutes, if they seem to be getting dark, cover with a piece of foil and then bake for another 15 minutes.
• Once baked, remove from the oven and leave to cool fully.
• When the bars are cool, remove using the parchment paper and then slice into 24 squares.
• Optionally serve with whipped cream or dust with powdered sugar.