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Peanut Butter Cookie Overnight Oats

Peanut Butter Cookie Overnight Oats are flavored with peanut butter and topped with miniature no-bake cookies. These filling and fun overnight oats make for a great on-the-go breakfast.
Course Breakfast, Snack, Vegetarian
Cuisine American, Vegetarian
Keyword Oatmeal Cookie Overnight Oats
Prep Time 10 minutes
Chill Time 1 hour
Total Time 1 hour 10 minutes
Servings 1 serving
Calories 507kcal
Author Chelsea Lords
Cost $1.45


Overnight Oats

  • 2 and 1/2 tablespoons creamy peanut butter
  • 1/2 teaspoon vanilla extract
  • 1/3 cup (74g) Greek vanilla yogurt (we love Greek Gods honey vanilla yogurt best)
  • 2/3 cup (158g) unsweetened vanilla almond milk (or any other milk)
  • 1/2 cup (55g) old-fashioned oats
  • 1 tablespoon maple syrup or honey (See Note 1)
  • Pinch of salt
  • Pinch of cinnamon
  • Optional toppings: cookies (see below), miniature chocolate chips, drizzle of peanut butter

Optional Peanut Butter Oatmeal Cookies

  • 2 tablespoons oat flour (regular oats that have been blended)
  • 2 tablespoons honey
  • 1/4 cup (54g) peanut butter
  • 3/4 cup (70g) old-fashioned oats
  • 2 tablespoons miniature chocolate chips


  • PREP THE OATS: In a small bowl, mason jar, or plastic container, stir together the peanut butter, vanilla extract, Greek yogurt, milk, old-fashioned oats, maple syrup, salt, and cinnamon.
  • STIR: Stir well until all ingredients are fully incorporated. Taste the mixture and add any additional sweetener if desired.
  • CHILL: Cover and refrigerate overnight or until sufficiently cooled and thickened. (Sometimes I'll even make them in the morning, get ready, and then go eat them -- they are great even after just 30 minutes in the fridge)
  • OPTIONALLY TOP: Once ready to enjoy, top oats with a drizzle of peanut butter, some miniature chocolate chips, and some mini peanut butter cookies (see next step) if desired.
  • COOKIES: For the "cookies" add the honey, peanut butter, oats, oat flour (measure the oat flour AFTER blending the oats in a blender or food processor), and miniature chocolate chips to a small bowl. Mix (kneading with your hands as needed) until a thick and cohesive dough forms. If too wet, add a bit more oat flour and too dry, add a bit more honey or peanut butter. Form small balls by squishing the mixture and then rolling into balls. You need to squish it tightly and roll the balls tightly to keep them together. Add a few on top of the overnight oats if desired.


As written, these overnight oats are intended to be quite creamy. If you'd rather have them thicker, add a few tablespoons of additional oats and/or 1-2 tablespoons chia seeds.
Note 1: Scale sweetener up or down to personal preference -- you may not even want any sweetener at all! We prefer 1 tablespoon maple syrup; use 2 tablespoons for more sweetness. Alternatively, use 1/4 teaspoon liquid stevia drops for a zero-calorie sweetener.


Serving: 1serving | Calories: 507kcal | Carbohydrates: 40.7g | Protein: 23.5g | Fat: 27.2g | Cholesterol: 12.3mg | Sodium: 327.7mg | Fiber: 6g | Sugar: 8g