Preheat the oven to 350 F. In a large bowl, whisk together flour, sugar, cocoa powder, salt, and baking soda. Add in eggs, melted butter, and vanilla extract, and mix until smooth.
In a medium bowl, whisk together flour, salt, and baking soda. In a large bowl, combine butter with sugar until fluffy. Add in egg and vanilla extract, and mix until smooth.
Add in the flour mixture, and mix until it is fully combined. Add in the green food coloring, and mix until it is fully green.
Pour the brownie batter into a greased 8-inch square baking dish. Evenly top with the green cookie dough. Bake for 25-30 minutes.
