Chewy Peanut Butter Cookie Bars Recipe for Crowd-Pleasing Treats

These healthy peanut butter cookie bars use a modest amount of sweetener, whole grain flour, and protein-rich peanut butter. They’re perfect as a mid-afternoon treat or a pre-workout snack.

Stack of cookie bars on a dark plate.

If you’re trying to cut back on sugar but still want something satisfying and tasty, these cookie bars are an excellent choice.

Think of a cookie bar as a cookie pressed into a pan — but these fall someplace between cookie and cake. They’re dense and fudgy with a tender, slightly airy bite.

The recipe includes higher-protein ingredients like peanut butter and Greek yogurt, plus enough healthy fat to keep the bars filling and flavorful.

The finished bars are delicious on their own or topped with chocolate chips for a little extra indulgence.

Ingredients and substitutions

Ingredients for peanut butter cookie bars laid out on a table.
  • Peanut butter
  • Coconut oil – can be swapped for melted butter or grapeseed oil
  • Maple syrup
  • Coconut sugar – any granulated sugar will work
  • Warm water
  • Greek yogurt
  • Vanilla extract
  • Whole grain flour – whole wheat, Einkorn, or spelt work well; oat flour is a good gluten-free alternative
  • Baking powder
  • Sea salt
  • Chocolate chips or chopped dark chocolate for topping

Recipe steps

Preheat the oven to 350°F (175°C).

Whisk the wet ingredients together in one bowl, and combine the dry ingredients in a separate bowl.

Pour the dry mix into the wet ingredients and stir until just combined.

Peanut butter, oil, sugar, and water mixed in a bowl.
Cookie dough in a bowl.

Press the batter into a well-oiled 8 x 8-inch baking dish. Scatter chocolate chips or chopped chocolate over the top if desired.

Cookie dough pressed into a baking dish.
Unbaked cookie dough topped with chocolate chips.

Bake for 13–16 minutes, or until the top is set and the edges are lightly golden. Avoid overbaking to keep the bars fudgy. Let cool before slicing into 9 bars.

FAQs

Can I make these gluten-free?

Yes — substitute oat flour for the whole grain flour to make the bars gluten-free.

I’m allergic to peanuts. Can I use another nut or seed butter?

Yes — almond butter or SunButter (sunflower seed butter) or another favorite nut/seed butter will work well.

Cookie bar topped with chocolate chips.

Recipe notes

Adjust the sweetness to taste. I typically use two tablespoons of coconut sugar plus a touch of stevia; if you prefer to avoid stevia, use the full amount of sugar suggested.

Cookie bar topped with chocolate chips.
5 from 6 votes

Peanut Butter Cookie Bars

These lower-sugar cookie bars are made with maple syrup, whole grain flour, and peanut butter for a balanced, satisfying snack.
Prep Time10
Cook Time16
Total Time26
Servings: 9 bars
Author: Lauren Goslin

Ingredients

WET INGREDIENTS

  • cup peanut butter (choose a runnier variety)
  • ¼ cup melted coconut oil
  • 2 Tablespoons Greek yogurt
  • 2 Tablespoon maple syrup
  • 2-4 Tablespoons coconut sugar see notes above
  • 5 Tablespoons warm water
  • 1 teaspoon vanilla extract

DRY INGREDIENTS

  • 1 cup whole grain flour Einkorn, whole wheat, or spelt all work well
  • ½ teaspoon baking powder
  • ¼ teaspoon sea salt
  • chocolate chips or chopped dark/unsweetened chocolate for topping

Instructions

  • Preheat the oven to 350 degrees.
  • Mix the wet ingredients together in a bowl.
  • Combine the dry ingredients in a separate bowl.
  • Stir the dry mix into the wet ingredients until just combined.
  • Press the batter into a well-oiled 8 x 8 baking dish.
  • Top with chocolate chips or chopped chocolate if you like.
  • Bake 13–16 minutes, until the top is set and the edges are lightly golden. Cool before slicing.

Notes

Nutrition estimates use whole wheat flour and two tablespoons of sugar. Chocolate chips are not included in the calculation.

Weight Watchers points: 8 (estimate)

Nutrition

Calories: 180kcal
Carbohydrates: 17.8g
Protein: 4g
Fat: 11.4g
Fiber: 1.9g
Sugar: 6.7g

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