Brownie recipe

1. Preheat oven to 350 degrees fahrenheit
2. Grease a small pan
3. Melt 10 tablespoons of butter
4. Stir in 1 cup of sugar, 1/3 cup of brown sugar, and 3/4 cup plus 2 tablespoons of sifted cocoa powder with the butter
5. Stir in 1/2 teaspoon of vanilla extract, 2 eggs, 1 egg yolk, and 1 tablespoon of corn syrup until very well-combined
6. Stir in 2/3 cup flour, 1 tablespoon of corn starch, and 1/4 teaspoon of salt until just combined
7. Pour the mixture into the pan
8. Bake in oven for 25 minutes or until a toothpick comes out clean