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buttertart brownies

Best Buttertart Brownies

This indulgent dessert is combines my two fav desserts: brownies and butter tarts. 
Course Dessert
Cuisine American
Prep Time 15 minutes
Cook Time 45 minutes
Total Time 1 hour
Servings 16 people
Calories 380kcal


Buttertart Layer

Brownie Layer

  • 1 cup melted butter
  • 1 tbsp vanilla
  • 2 3/4 cup white sugar
  • 4 eggs
  • 1 tsp salt
  • 1 cup unsweetened cocoa powder
  • 1 1/2 cups all purpose flour
  • 100 g 70% Dark Chocolate finely chopped
  • Icing sugar if desired


Buttertart Layer

  • Preheat oven to 350 F and lightly grease a 9 x 13 inch glass baking dish.
  • Mix everything together thoroughly in a bowl. Set aside.

Brownie Layer

  • Combine the butter, sugar and vanilla in a medium bowl until combined. Beat in the eggs, one at a time until everything is incorporated.
  • In another bowl, sift together the salt, cocoa and flour. In two additions, mix the dry into the wet and stir until combined. Stir in the dark chocolate shards.


  • Pour the brownie mixture into the prepared dish and smooth it out so that it’s as flat as you can make it. Top it off with the buttertart layer.
  • Bake in the preheated oven for about 40-45 minutes. Don’t bother with the toothpick test- the gooey buttertart layer will always be gooey and will give a false impression of doneness. Check the bottom of the pan for doneness and press the top to ensure it no longer giggles and is dry.
  • Allow to cool for a few hours until room temperature before slicing, dusting with icing sugar (if desired) and serving.


Calories: 380kcal