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Kitchen Sink Cookie Bars Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.8 from 281 reviews
  • Author: Villerius
  • Prep Time: 10 minutes
  • Cook Time: 16-18 minutes
  • Total Time: 30 minutes
  • Yield: 24 squares
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Description

These Kitchen Sink Cookie Bars are thick, soft, gooey, and chewy treats packed with a delightful mix of chocolate chips, pretzels, and caramel. Made in one bowl without the need for mixers, this crowd-pleasing recipe combines buttery sweetness with a hint of saltiness for a perfect balance. Baked to golden perfection in a 9×13 inch pan, they’re easy to slice and serve, making them an ideal snack or dessert for any occasion.


Ingredients

Scale

Wet Ingredients

  • ¾ cup unsalted butter (1 ½ sticks), melted
  • ¾ cup light brown sugar
  • ½ cup granulated sugar
  • 1 large egg + 1 egg yolk
  • 2 teaspoons vanilla extract

Dry Ingredients

  • 1 teaspoon baking soda
  • ¼ teaspoon baking powder
  • ½ teaspoon salt
  • 2 cups all-purpose flour (add extra ¼ cup if dough is too runny)

Mix-Ins

  • ½ cup semi-sweet chocolate chips
  • ½ cup milk chocolate chips (substitute with M&M’s and add 2 tablespoons inside dough for holiday version)
  • ½ cup broken pretzels
  • ½ cup chewy caramel pieces (Kraft or Werther’s Soft)


Instructions

  1. Preheat Oven: Preheat your oven to 350°F to prepare for baking the cookie bars.
  2. Melt Butter: In a medium microwave-safe bowl, melt ¾ cup unsalted butter for 20-30 seconds until just melted. Allow to cool slightly if hot to prevent cooking the eggs.
  3. Mix Sugars and Wet Ingredients: Add ¾ cup light brown sugar and ½ cup granulated sugar to the melted butter. Stir with a spatula until combined, avoiding the use of a mixer. Add the whole egg, extra egg yolk, and 2 teaspoons vanilla extract. Mix until fully incorporated.
  4. Add Leavening and Salt: Stir in 1 teaspoon baking soda, ¼ teaspoon baking powder, and ½ teaspoon salt evenly throughout the mixture.
  5. Incorporate Flour: Add 2 cups all-purpose flour and mix by hand until the flour is fully absorbed and no dry spots remain.
  6. Add Mix-Ins: Fold in ½ cup semi-sweet chocolate chips, ½ cup milk chocolate chips, ½ cup broken pretzels, and ½ cup chewy caramel pieces evenly into the dough.
  7. Prepare Pan and Shape Dough: Grease or line a metal 9×13 inch baking pan with parchment paper. Spread the dough evenly into the pan and smooth the surface. Add extra mix-ins on top for decoration if desired.
  8. Bake: Bake at 350°F for 16-18 minutes until the edges and top turn lightly golden brown and the center no longer appears wet. Some ovens may require up to 20 minutes.
  9. Cool and Slice: Remove from oven and cool completely on a cooling rack before slicing into 24 squares for serving.
  10. Storage: Store covered with plastic wrap or in an airtight container for up to 3 days. For longer storage, freeze to maintain freshness.

Notes

  • The bars are thick, soft, gooey, and chewy — perfect for a crowd pleaser.
  • This recipe requires only one bowl and no mixers, making it simple and quick to prepare.
  • If the dough is too runny, add an additional ¼ cup of flour for better consistency.
  • For a holiday twist, swap milk chocolate chips for M&M’s and add 2 tablespoons of M&M’s inside the dough.
  • Allow cookie bars to cool completely before cutting to ensure clean slices.
  • Store bars in an airtight container for up to 3 days to retain moisture.
  • Freeze cookie bars to keep them fresh for longer periods.

Nutrition

  • Serving Size: 1 bar (1/24th of recipe)
  • Calories: 200 kcal
  • Sugar: 18 g
  • Sodium: 180 mg
  • Fat: 9 g
  • Saturated Fat: 5 g
  • Unsaturated Fat: 3 g
  • Trans Fat: 0.2 g
  • Carbohydrates: 29 g
  • Fiber: 1 g
  • Protein: 2 g
  • Cholesterol: 23 mg