Brownies with Baileys frosting


I’m back this week with one of my favourite deserts I’ve ever made, these beauties. Gooey brownies with soft frosting is always a winning combination, but when it’s chocolate and Baileys, it’s a whole new level.

I based the brownie recipe on this one and the frosting on this one.

Originally, when I took these pictures, I wanted to use up the Prozis’ oatmeal mix, the brownie flavoured one. So, I used like it was a boxed brownie, only adding oil, eggs, cocoa powder, salt, instant coffee powder and chopped chocolate.

Since then, I’ve made them again with an actual brownie recipe and that’s the one I’m sharing in this post, inspite of the pictures, because I feel it’s more helpful.

Also, I don’t have a picture of the frosting’ ingredients. At the time, I made them by eye (oops!), and I still kind of make it by eye, but I’ve given approximate measures of what I use. Just make it how you wanna make it!

This one is a must, must, MUST try and if you do, please post it on instagram and tag @msizebite so I can see!


Brownies with Baileys frosting

This amazing combination of decadent chocolate brownies with light, melt in your mouth, slightly boozy frosting is a match made in heaven.
Prep Time20 mins
Cook Time20 mins
Course: Dessert
Cuisine: American
Keyword: baileys, boozy, brownie, chocolate, frosting
Servings: 20 servings


For the brownies

  • 120 ml Vegetable oil
  • 200 g Granulated sugar
  • 1 tsp Vanilla extract
  • 2 Eggs
  • ¼ tsp Baking powder
  • 40 g Cocoa powder
  • ¼ tsp Salt
  • 70 g Flour
  • 1 tbsp Instant coffee powder optional
  • 200 g Chopped chocolate optional

For the Baileys frosting

  • 250 g Unsalted butter softened
  • 250 g Powdered sugar
  • 3 tbsp Baileys approximately


For the brownies

  • Pre-heat the oven to 180ºC.
  • Line and grease a square or retangular baking pan. I used a ???? retangular pyrex).
  • In a bowl, add the sugar and the oil and mix.
  • Add the eggs and the vanilla and mix until combined.
  • In a separate bowl, add all the dry ingredients and stir.
  • Add the dry ingredients into the oil and sugar mix and fold until it's homogenous.
  • Add the chopped chocolate until it's evenly distributed.
  • Bake for 20 minutes or until it's firm in the center when gently pressed.
  • Let cool completely.

For the frosting

  • In a hand mixer or stand mixer, beat the butter until pale and fluffy.
  • Slowly add the sugar until the frosting is really thick, thicker than what you want the final frosting to be.
  • Again, slowly, add the Baileys until desired thickness. Taste all the way so you can tell if it's boozy enough.
  • Spread and swoosh on top of the cool brownies.
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