Gluten-free S'mores Blondies

-1 Preheat your oven to 350 F.
-1 In a medium sized bowl, whisk together the egg, olive oil, coconut sugar and vanilla extract.
-1 Mix in remaining dry ingredients and stir lightly until a dough forms. Fold in the chocolate chunks and marshmallows, reserving some to top. 
-1 Flatten the dough into a parchment lined 8 x 8 baking dish. Top with remaining chocolate and marshmallows. 
-1 Bake for 15-18 minutes, until the top begins to brown. 15 minutes will result in more of an underdone texture, so bake according to preference! 
-1 Let cool for 10 minutes before slicing. Top with flakey sea salt if desired 
-1 Keep stored in a sealed tight container for up to 1 week, or freeze for up to two months.