Gooey Chocolate Marshmallow Bars (Print Version)

# Ingredients:

→ Cookie Base

01 - 275g plain flour
02 - 1 tsp bicarbonate of soda
03 - 1/2 tsp salt
04 - 1 tbsp cornflour
05 - 115g unsalted butter
06 - 100g granulated sugar
07 - 100g light brown sugar
08 - 1 medium egg
09 - 1/2 tsp vanilla extract
10 - 300g milk or dark chocolate chips

→ Filling

11 - 1 tub marshmallow fluff

# Instructions:

01 - Heat your oven to 190°C/170°C Fan. Line a 9×9 inch square tin with parchment paper, making sure it comes up the sides a bit for easy removal later.
02 - In a bowl, whisk together the flour, bicarbonate of soda, salt, and cornflour until well combined. Set aside for now.
03 - In a larger bowl, melt the butter. Add both sugars and whisk for about 2 minutes until the mixture is smooth and the sugar starts dissolving. Add the egg and vanilla, then whisk again briefly until smooth. An electric whisk works great here.
04 - Add the dry ingredients to your wet mixture and mix until you've got a cookie dough. Fold in the chocolate chips with a spatula until they're evenly distributed throughout the dough.
05 - Press about two-thirds of the cookie dough into the bottom of your lined tin, spreading it evenly. Microwave the marshmallow fluff for 20-30 seconds to make it easier to spread, then pour it over the cookie dough layer.
06 - Cover the marshmallow layer with the remaining third of cookie dough. This can be tricky - try rolling the dough between two sheets of cling film, then flip it on top of the marshmallow layer for even coverage.
07 - Bake for 20-25 minutes, until the top of the cookie looks dry. Let it cool in the tin for about 10 minutes, then transfer to a wire rack to cool completely before cutting.
08 - Cut into 16 pieces (4×4) for regular sizes or 25 pieces (5×5) for smaller bites. They're amazing slightly warm with ice cream!

# Notes:

01 - Regular marshmallows won't work - they'll disappear when baked.
02 - Try warming a piece in the microwave for 10-15 seconds for extra gooeyness.
03 - These taste even better on day two after the flavors have melded.

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