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5 from 1 vote

Penuche Bars

Soft and chewy brown sugar, brown butter bars!
Prep Time15 mins
Cook Time30 mins
Total Time45 mins
Course: Dessert
Cuisine: American
Servings: 10 people
Calories: 598kcal
Author: Lauren Allen


  • 1/2 cup + 1 Tablespoon butter
  • 2 cups light brown sugar
  • 2 large eggs , beaten
  • 1 1/2 cups all-purpose flour
  • 2 teaspoons baking powder
  • 1/2 teaspoon salt
  • 1 teaspoon vanilla extract

For the frosting

  • 1/2 cup butter
  • 1 cup light brown sugar
  • 1/4 cup evaporated milk
  • 2 cups powdered sugar (roughly 2 cups)


  • Preheat oven to 350 degrees F.
  • Melt butter in a saucepan and then add brown sugar and stir until smooth. 
  • Bring to a slow bubbling boil for 1 minute. Remove from heat and allow to cool (but not long enough that the mixture gets hard..this step is very important). 
  • Stir in eggs, flour, baking powder, salt and vanilla. 
  • Mix well and spread into a well greased 8x10'' glass or ceramic in baking dish. Bake for 30 minutes.
  • While the bars bake, make the frosting.

For the frosting

  • Melt butter in a small saucepan over medium heat. Add brown sugar and stir until smooth. 
  • Bring to a rolling boil and boil for 2 minutes. 
  • Remove from heat and slowly stir in evaporated milk. Stir until well blended and then return to heat and bring to a boil once more. 
  • Once boiling, remove from heat again and allow mixture to cool until you can touch the bottom of the saucepan with your hand. 
  • Add powdered sugar--enough to reach a good frosting consistency. Spread frosting over warm bars and allow to cool before cutting the bars. 
  • The frosting will set up as it cools. 
  • To store, cover well with plastic wrap or place extra bars in an airtight container so they don't dry out.


Calories: 598kcal | Carbohydrates: 104g | Protein: 3g | Fat: 19g | Saturated Fat: 12g | Cholesterol: 83mg | Sodium: 317mg | Potassium: 220mg | Sugar: 88g | Vitamin A: 630IU | Vitamin C: 0.1mg | Calcium: 119mg | Iron: 1.6mg