how’s THAT for a title?! i could just as easily have said, “take everything you love about fall desserts and turn it into the ultimate fall treat.” it really would have been just as accurate. although, just as long of a title! so…..
ok, what makes THIS recipe special? its the layers and layers of flavor. pumpkin spice, browned butter, brown sugar, white chocolate that’s been slow roasted to this caramelized perfection, lush mascarpone and toasted walnuts. im literally drooling while typing this. its not often i go back for thirds, fourths, ok….. half the sheet pan’s worth before “deciding” the recipe was perfect. what can i say? i take quality control very seriously. oh, and its quite possibly the most delicious thing to have ever been created in my kitchen.
this also happens to be the most highly anticipated recipe (most requested on my Instagram) before even hitting the blog. its so, so good. i even made a video! so now i can not stop watching the dessert i can not stop eating! love it. enjoy, friends. -megs
brown butter pumpkin bars with caramelized white chocolate mascarpone buttercream
- stand mixer with paddle attachment
- 9X13 baking pan
- parchment paper
- baking sheet
brown butter pumpkin bars
- 2 c all purpose flour (240g)
- 1 tsp baking soda
- 1 tsp baking powder
- 1 tbsp pumpkin pie spice (see notes)
- 1/2 tsp salt
- 1 c unsalted butter (227g), browned and cooled to room temperature (170g) (see notes)
- 1 c packed light brown sugar (220g)
- 1/4 c sugar (50g)
- 3 large eggs, room temperature
- 1 c pumpkin puree
caramelized white chocolate mascarpone buttercream + toasted walnuts
- 6 oz. caramelized white chooclate (150g) (see notes)
- 1 c unsalted butter, softened (113g)
- 8 oz. mascarpone cheese, room temperature
- 2 1/2 c powedered sugar, sifted
- 1 tsp vanilla bean paste (alt. use vanilla extract)
- 1/2 tsp salt
- 1/3-1/2 c crushed walnuts, lightly toasted
brown butter pumpkin bars
- To make the brown butter, melt butter in a clear heavy bottom pot. Once the butter starts to foam, whisk continuously until brown bits start to form. Remove from heat, pour into clean bowl, skim the foam from the top and cool to room temperature (30 minutes).
- Line 9×13 baking pan with parchment paper and preheat oven to 350F. Whisk together flour, baking powder, baking soda, salt and pumpkin spice. Set aside.
- In a stand mixer with paddle attachment, browned butter, and sugar until smooth and well combined. Add eggs, beating well after each one until well combined. Add pumpkin puree and vanilla bean paste, beating until well combined.
- Add dry ingredients to the wet 1/2 batch at a time. Slowly beat each time until JUST combined. A few flour streaks is okay! Drop evenly sized scoops into the prepared pan. Evenly press batter/dough into the pan.
- Bake at 350 for 35-45 minutes or until a toothpick inserted into the center comes out clean or with a few moist crumbs. Pull from the oven, and allow to cool min. 60 minutes. Pumpkin bars should be completely cool before frosting.
caramelized white chocolate mascarpone buttercream
- Return caramelized white chocolate to liquid form by placing in a microwave safe bowl and heating in 20 second intervals (stirring after each) until melted. Cool to room temperature.
- In a stand mixer, with paddle attachment, beat butter until light and fluffy, about 4-5 minutes. On the lowest speed, beat in the mascarpone cheese with butter until well combined. Go slowly or you risk the cheese breaking. Once combined, slowly beat in cool (but still liquid) caramelized white chocolate. Add powdered sugar, a generous tablespoon at a time, beating slowly to combine. After adding about half the powdered sugar, add in the salt and vanilla bean paste. Beat until well combined. Add the remaining half of the sugar, a generous tablespoon at a time, beating until well combined. Once all the sugar is added, beat frosting on med-high until smooth. Using a palette knife or spatula, spread frosting on top of cooled pumpkin bars.
- To toast walnuts, line walnuts on a parchment lined baking sheet. Bake in oven at 350F for 8-10 minutes. Cool and roughly chop. Scatter on top of frosting.
tips to make the perfect caramelized white chocolate
did you make this recipe?
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