Prep an 8×8" baking dish. In a bowl, stir together the melted butter, cookie butter, cinnamon and sugar.
Add in the eggs and vanilla, and stir until combined.
Add in the salt and flours and mix until the dough comes together. Last, add the chocolate chips in and stir to just barely combine - don't overmix.
Press the dough into your prepared pan so that it touches the edges and is nice and even. Bake for 25-30 minutes or knife/cake tester/toothpick comes out.
Let them cool/come to room temperature before diving in!
Store in an airtight container -- they'll keep for about 5 days.
Notes
You can not include the chocolate chips if you don't wanna!