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Ultimate Chewy Monster Cookie Bars Recipe Easy Homemade 5-Ingredient Snack Bars

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These chewy monster cookie bars are a quick and easy homemade snack made with just five simple ingredients, perfect for any occasion and packed with melty chocolate chips and crunchy oats.

Ingredients

Scale
  • 1 cup creamy unsalted peanut butter
  • 1 cup packed brown sugar
  • 2 large eggs, room temperature
  • 2 cups old-fashioned rolled oats
  • 1 cup semi-sweet chocolate chips

Instructions

  1. Preheat your oven to 350°F (175°C). Line an 8×8-inch baking pan with parchment paper, leaving some overhang to lift the bars out easily later.
  2. In a large mixing bowl, combine 1 cup (250g) of creamy peanut butter and 1 cup (220g) of packed brown sugar. Mix well with a sturdy spatula until smooth and fully blended, about 2-3 minutes.
  3. Add 2 large eggs, one at a time, mixing well after each addition until the batter is glossy and slightly lighter in color.
  4. Stir in 2 cups (180g) of old-fashioned rolled oats, folding gently to keep the oats intact but evenly distributed.
  5. Fold in 1 cup (180g) of semi-sweet chocolate chips. If the batter feels too stiff, add a tablespoon of milk to loosen it slightly.
  6. Spread the dough evenly into the prepared pan and smooth the top with a spatula, pressing gently to compact the batter for even baking.
  7. Bake for 20-25 minutes, until the top is set and edges start turning golden brown. The center may look slightly soft but will firm up as it cools.
  8. Remove from the oven and cool completely in the pan on a wire rack. Once cooled, use the parchment overhang to lift the bars out and cut into about 12 squares.

Notes

Use parchment paper for easy removal and cleaner cuts. Avoid overmixing to keep oats intact for chewy texture. Let bars cool completely before cutting to prevent crumbling. For gluten-free, use certified gluten-free oats. Crunchy peanut butter can be used but may affect texture.

Nutrition

Keywords: monster cookie bars, chewy cookie bars, peanut butter bars, easy snack bars, 5-ingredient bars, homemade cookie bars

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