The best brownies I've ever made. If you like chewy brownies, then this is the recipe for you! These are the only brownies I've ever thought are better than the boxed kind!
Preheat the oven to 350°F. Line a 9x9 inch tray with parchment paper.
In a standing mixer using the paddle attachment, cream together the butter and brown sugar on medium speed for ~3 minutes.
Scrape the bottom with a silicone spatula to make sure everything is even and then add in the eggs, vanilla extract, and salt and mix on medium for another 2 minutes. Add in the Nutella and oil, and mix until smooth (~1 minute). Scrape the bottom again to make sure everything is mixed evenly.
Add in the flour and mix on low speed until just combined. Try not to over mix! Scrape the bottom again and then stir in the chocolate chips.
Pour and spread the batter evenly into your lined pan. Using a small spoon or teaspoon, drop little dollops of the remaining 2 tbsp of Nutella onto the batter and use a knife or toothpick to swirl it around the top. Bake for ~35-38 minutes, until the brownies are just set (the batter won't jiggle in the center when you slightly shake the pan). Oven baking times vary, so start looking at your batter around the 35 minute mark to make sure it doesn't over bake.
Let cool for 1 hour or until almost room temperature before you cut into them. Sprinkle with flaky sea salt (if desired).
Servings 16