Ingredients
Method
For the marshmallow fluff:
- Combine the aquafaba, vanilla, and cream of tartar in a large mixing bowl.
- Beat on high spead for 1 minute, until it starts to get fluffy.
- Gradually add the sugar (one spoonful at a time) while continuing to beat on high speed.
- Beat for about 10 minutes, until glossy and stiff peaks hold their shape.
- Set aside while preparing the cookie base. This can be made in advance and refrigerated overnight, if desired.
For the cookie base:
- Mix flour, cornstarch, salt, soda, & powder. Set aside.
- In a mixing bowl, using the paddle hook, cream butter and sugars. Mix until well-blended and fluffy.
- Add vanilla and apple cider vinegar. Blend well, but don't be surprised if the mixture separates and looks a little clumpy.
- With the mixer on low speed, gradually add dry ingredients. Mix until well blended.
Assemble and bake the bars:
- Pre-heat oven to 400° F.
- Grease a 13 X 9 baking pan, then press the cookie dough batter into the bottom of the prepared pan and spread evenly.
- Using a large spoon, place dollups of sunflower seed butter evenly over top the cookie batter.
- In similar fashion, spoon dollops of marshmallow fluff over the cookie crust (some dollops will land directly on the crust, while others land on top of the sunflower seed butter).
- Drag a table knife through the cookie dough batter, back and forth in a swirling pattern.
- Bake on center oven rack for 9 to 12 minutes.
- Remove from oven and cool completely in pan.
- Cut into squares and serve.
