Mud Hen Bars (Chocolate Chip Marshmallow Meringue Bars)
A delicious cookie-like crust, sprinkled with chocolate and marshmallows, then topped with a brown sugar meringue. I've never had anything like this before.
Spray a 9x13 baking pan lightly with nonstick spray.
In a large bowl or mixer, beat together shortening, butter, granulated sugar, 1 whole egg, 2 egg yolks (save the whites!), and vanilla until smooth.
Add in flour, baking powder and salt and mix until just combined. Spread in prepared pan. This can be tricky. It helps to get your fingers a little wet so that the dough doesn't stick to them.
Sprinkle evenly with chocolate chips and mini marshmallows.
In a clean and dry mixing bowl with whisk attachment on your mixer, beat the 2 remaining egg whites until stiff peaks form, about 2 minutes on high.
Fold in 1 cup of light brown sugar with a rubber spatula. Stir gently until combined and there are no lumps.
Spread on top of chocolate chips and marshmallows.This is also tricky. Don't stress, it doesn't have to be perfect.
Bake 25-35 minutes until top is golden brown. I baked mine for about 30.
Allow to cool completely before cutting into squares. Good luck with this step.
Notes
I used dark brown sugar in my meringue, and it was just fine. I think my topping was a little darker than it would have been with light...obviously, haha.Source: Cookies and Cups