Chewy Snickers Brownies Recipe

Preheat oven: Preheat your oven to 350°F (175°C).
Prepare pan: Butter a 9×13 inch metal baking pan. Line with parchment paper, extending the paper up the sides.
Combine wet ingredients: Whisk cocoa, espresso, and boiling water until smooth. Add chocolate and whisk until melted. Whisk in butter and oil. Add eggs, yolks, and vanilla. Whisk in sugar.
Add dry ingredients: Add flour and salt. Mix with a rubber spatula until combined.
Layer batter and Snickers: Transfer half the batter to the prepared pan. Sprinkle with 3/4 of the chopped Snickers. Spread the remaining batter over the Snickers. Sprinkle with the remaining Snickers.
Bake: Bake for 30-35 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs.
Cool: Let the pan cool on a wire rack for 1 ½ hours.
Cut and serve: Using the parchment overhang, lift the brownies from the pan. Let cool completely, about 1 hour. Cut into 2-inch squares and serve.