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Cozy No-Bake Spiderweb Chocolate Peanut Butter Bars (Best Easy Dessert)

no-bake spiderweb chocolate peanut butter bars - featured image

These no-bake spiderweb chocolate peanut butter bars are a cozy, forgiving dessert that tastes like comfort in every bite. With a creamy peanut butter layer, a snappy chocolate topping, and a stunning spiderweb design, they’re perfect for Halloween parties or any time you need a quick, impressive treat.

Ingredients

Scale
  • 1 cup creamy peanut butter (recommended: Skippy or Jif)
  • 1/2 cup unsalted butter, softened to room temperature
  • 2 cups powdered sugar (confectioners’ sugar), sifted if lumpy
  • 1 teaspoon vanilla extract (pure vanilla extract preferred)
  • 1/4 teaspoon salt (only if using unsalted butter)
  • 1 1/2 cups semi-sweet chocolate chips (recommended: Ghirardelli)
  • 2 tablespoons coconut oil
  • 1/4 cup white chocolate chips
  • 1 teaspoon coconut oil (for white chocolate)

Instructions

  1. Line an 8×8-inch baking pan with parchment paper, leaving overhang on two opposite sides. Set aside.
  2. In a large mixing bowl, combine 1 cup creamy peanut butter and 1/2 cup softened unsalted butter. Beat with an electric mixer on medium speed until smooth and well combined, about 2 minutes.
  3. Add 2 cups powdered sugar, 1 teaspoon vanilla extract, and 1/4 teaspoon salt (if using). Mix on low speed until incorporated, then increase to medium speed and beat for 2-3 minutes until smooth, thick, and holds together when pressed.
  4. Transfer the peanut butter mixture to the prepared pan. Press into an even layer using a spatula or lightly greased hands. Refrigerate for about 10 minutes.
  5. In a medium microwave-safe bowl, combine 1 1/2 cups semi-sweet chocolate chips and 2 tablespoons coconut oil. Microwave in 30-second intervals, stirring well between each, until fully melted and smooth (about 1-2 minutes total).
  6. Remove the pan from the refrigerator. Pour the melted chocolate over the peanut butter layer and spread evenly with a spatula. Work quickly.
  7. In a small microwave-safe bowl, melt 1/4 cup white chocolate chips with 1 teaspoon coconut oil. Microwave in 20-second intervals, stirring each time, until smooth. Transfer to a small piping bag or zip-top bag with a tiny corner snipped off.
  8. Pipe concentric circles on top of the chocolate layer: start with a small circle in the center, then pipe larger circles around it, spacing them about 1/2 inch apart (4-5 circles total).
  9. Using a toothpick, starting from the center, drag the toothpick outward through all the white chocolate circles toward the edge of the pan. Wipe the toothpick clean, then drag from the center outward again, rotating the pan slightly each time. Repeat until you’ve gone all the way around (about 8-10 drags).
  10. Place the pan in the refrigerator for at least 2 hours, or until the chocolate is completely firm to the touch. (For a quicker set, freeze for about 45 minutes, but texture is better with slower chilling.)
  11. Once fully set, lift the bars out of the pan using the parchment paper overhang. Place on a cutting board and slice into 16 squares (or 9 for larger bars) using a sharp knife, wiping clean between cuts.

Notes

Don’t use natural peanut butter for the base layer; it can make the bars grainy and oily. For dairy-free, swap butter for vegan butter and use dairy-free chocolate chips. For gluten-free, ensure vanilla extract and chocolate chips are certified gluten-free. Work quickly with the spiderweb design as the chocolate sets fast. For cleanest cuts, use a hot knife (run under hot water, dry, then slice). Bars are best served cold but can be microwaved for 10-15 seconds for a warm, gooey version.

Nutrition

Keywords: no-bake, spiderweb, chocolate, peanut butter, bars, Halloween, easy dessert, gluten-free