Introduction
Soft, chewy, and packed with peanut butter flavour, these Flourless Gluten-Free Oatmeal Peanut Butter Cookies are proof that simple ingredients can make an incredibly satisfying treat. Made with pantry staples and a flax egg instead of eggs, they’re naturally gluten-free, easy to prepare, and perfect for an afternoon snack or lunchbox treat.
This small-batch recipe makes 12 cookies, but it’s easy to double when you’re baking for family, friends, or the freezer.
📋 Quick Recipe Facts
| Prep Time | 10 minutes |
| Cook Time | 12 minutes |
| Total Time | 22 minutes |
| Servings | 12 Cookies |
| Difficulty | Easy |
| Course | Dessert, Snack |
| Method | Baking |
| Diet | Gluten-Free, Vegan |
❤️ Why You’ll Love This Recipe
- Soft and chewy texture
- Made with just a few pantry staples
- Naturally gluten-free
- Egg-free using a simple flax egg
- No flour required
- Easy to double for larger batches
🥣 Ingredients
- ½ cup peanut butter
- ½ cup packed brown sugar
- 1¼ cups certified gluten-free quick oats
- 1 tablespoon ground flaxseed
- 3 tablespoons water
- ½ teaspoon baking soda
👩🍳 Instructions
- Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.
- In a small bowl, stir together the ground flaxseed and water. Let the mixture sit for 5 minutes to thicken into a flax egg.
- In a medium mixing bowl, cream together the peanut butter and brown sugar until smooth.
- Stir the flax egg into the peanut butter mixture until well combined.
- Add the gluten-free quick oats and baking soda. Mix until everything is evenly incorporated.
- Roll the dough into 12 balls, approximately the size of a golf ball.
- Arrange the cookies on the prepared baking sheet and gently flatten each one to about ½-inch thick.
- Bake for 12 minutes, or until the cookies are set and lightly golden around the edges.
- Allow the cookies to cool on the baking sheet for 3 minutes, then transfer them to a wire rack to cool completely.
💚 Tips from The Gluten Free Oven
- Let the flax egg rest before mixing it into the dough. This gives it time to thicken and helps bind the cookies together.
- Don’t overbake these cookies. They will continue to firm up as they cool, giving them their soft and chewy texture.
- Use a cookie scoop to create evenly sized cookies that bake consistently.
- For softer cookies, store them in an airtight container with a slice of gluten-free bread. The bread helps maintain moisture without affecting the flavour.
🌿 Make It Your Own
- Stir in dairy-free or semi-sweet chocolate chips.
- Add chopped roasted peanuts for extra crunch.
- Mix in raisins or dried cranberries.
- Sprinkle the tops with flaky sea salt before baking.
- Add a teaspoon of vanilla extract for extra flavour.
⭐ Perfect Pairings
These cookies are delicious with:
- A scoop of vanilla ice cream for a simple dessert
- A cold glass of milk or your favourite dairy-free beverage
- Hot coffee
- Tea
- Fresh fruit
- Vanilla Greek yogurt
🥄 Kitchen Skills
Why Cookie Size Matters
Shaping your cookie dough into evenly sized portions helps the cookies bake at the same rate, giving you consistent results every time. If some cookies are much larger than others, the smaller ones may become overbaked before the larger cookies are fully cooked.
For the most even baking, try using a medium cookie scoop or measuring each portion with a tablespoon. After placing the dough on the baking sheet, gently flatten each cookie to a similar thickness. Since these cookies don’t spread very much while baking, shaping them before they go into the oven helps ensure they bake evenly and have a soft, chewy texture.
🥡 Storage
Room Temperature: Store in an airtight container for up to 5 days.
Freezer: Freeze the baked cookies in a freezer-safe container for up to 3 months. Thaw at room temperature before serving.
❤️ From My Kitchen to Yours
Some of the best recipes are also the simplest, and these cookies are a perfect example. With just a handful of everyday ingredients, you can enjoy a soft, chewy treat that’s easy enough for any day of the week. Whether you’re baking them for your family or simply treating yourself, I hope they become one of those recipes you reach for again and again. Happy baking!
🍎 More Recipes You’ll Love
If you enjoyed these Flourless Oatmeal Peanut Butter Cookies, you might also like these gluten-free favourites from The Gluten Free Oven:
