Haha, I'm so glad you like them and thanks for reading. Happy Holidays and enjoy the recipe!

Ingredients

Brownies:
1 1/4 cups sugar
10 tablespoons (1 stick + 2 tablespoons) butter
3/4 cup cocoa powder
1/2 teaspoon instant espresso powder
3/4 teaspoon salt
1 teaspoon vanilla extract
2 eggs, lightly beaten
1/2 cup flour
1/3 cup chocolate chunks
Frosting:
1/3 cup chocolate hazelnut spread (nutella)
2 tablespoons butter, melted
1/4 teaspoon vanilla extract
2 tablespoons whole milk
1/8 teaspoon salt
1 1/2 cups powdered sugar
Chocolate Drizzle (Optional):
1/2 (about 60g) milk chocolate, roughly chopped
2 teaspoons butter
Instructions

Brownies:
Preheat oven to 350 degrees F (180 C) and grease and 8x8 inch square pan with oil.
In a small saucepan set over low heat, slowly melt the butter with sugar and cocoa powder while whisking. Once melted, remove from heat and scrape into a medium bowl then stir in espresso powder, salt, and vanilla until combined. Add the eggs and stir just until mixed, then the flour and stir in until smooth.
Pour the batter into prepared pan and sprinkle chocolate chips over the batter evenly. Bake the brownies for 18 - 24 minutes until the center doesn't jiggle when the pan is nudged (you can also check center with a toothpick and see if it comes out clean). Remove from oven and cool for about 10 minutes before adding the frosting.
Frosting:
While the brownies are cooling, whisk the melted butter, nutella, vanilla extract, and milk in a small mixing bowl. Add the salt and powdered sugar and stir until creamy smooth. After about 10 minutes of cooling time on the brownies, scrape the frosting out of bowl and on top of them. Allow the heat of the brownies to soften the frosting for about 5 minutes, then very gently spread it over top being careful not to tear the brownies.
If you want to add the extra chocolate, melt the butter and milk chocolate in a double boiler or microwave safe bowl in short intervals until smooth and use a small pastry bag (or just a fork) to drizzle over the top.
For perfectly squared brownies, allow them to finish cooling completely (you can put the pan in the fridge or freezer if you're in a hurry) before cutting. However, for yummiest but messy brownies, dig in while they are still warm!!!