3-Ingredient Healthy Peanut Butter Oatmeal Cookies (No Flour, No Sugar)

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By Gianna Poulef

3-Ingredient Healthy Peanut Butter Oatmeal Cookies

These 3-Ingredient Healthy Peanut Butter Oatmeal Cookies are soft, chewy, and naturally sweet—made without flour, butter, oil, or added sugar. They’re perfect for quick snacks, healthy desserts, or busy mornings when you want something homemade now.

Overview of 3-Ingredient Peanut Butter Oatmeal Cookies

These cookies are ideal for:

  • Healthy snacks
  • Quick desserts
  • Meal prep
  • Kid-friendly baking

Why you’ll love this recipe

  • Just 3 ingredients
  • No flour, no refined sugar
  • Naturally sweet and filling
  • Ready in about 10 minutes

What they taste like

Warm peanut butter flavor, lightly sweet from ripe banana, and soft oats that give a chewy, comforting bite—simple and satisfying.

Full Ingredient List (Complete & Tested)

This Now, Make It Later!

Main Ingredients

  • 1 cup natural peanut butter (creamy, unsweetened)
  • 1 cup rolled oats (old-fashioned or quick oats)
  • 1 ripe banana, mashed

Optional Add-Ins (Still Healthy!)

  • 1/4 teaspoon cinnamon
  • 1/4 cup dark chocolate chips
  • 1 tablespoon chia seeds or flaxseeds
  • Pinch of salt (if peanut butter is unsalted)

Tools You’ll Need

  • Mixing bowl
  • Fork or spoon
  • Baking sheet
  • Parchment paper
  • Fork (for flattening)

Substitutions & Variations

  • Use almond butter instead of peanut butter
  • Swap banana for 1/3 cup unsweetened applesauce
  • Use gluten-free certified oats if needed
  • Add vanilla extract for warmth

How to Make 3-Ingredient Peanut Butter Oatmeal Cookies

Step 1: Preheat the Oven

Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper.

Step 2: Mix the Dough

In a bowl, mash the banana until smooth. Stir in peanut butter until fully combined, then fold in oats. The dough will be thick and sticky.

Step 3: Scoop and Shape

Scoop tablespoon-sized portions onto the baking sheet. Flatten gently with a fork—they won’t spread much.

Step 4: Bake

Bake for 8–10 minutes, until cookies are set and lightly golden on the edges.

Step 5: Cool

Let cookies cool for 5 minutes. They firm up slightly but stay soft inside.

What to Serve with These Cookies

  • A glass of almond or oat milk
  • Fresh fruit
  • Yogurt for breakfast
  • Coffee or tea for afternoon snack time

Tips for Making Them Perfect

  • Use very ripe bananas for sweetness
  • Stir peanut butter well before measuring
  • Don’t overbake—soft is the goal
  • Let cookies cool before moving

Storage Instructions

  • Room Temperature: 2 days, covered
  • Refrigerator: Up to 5 days
  • Freezer: Freeze baked cookies up to 2 months
  • Reheat: 10 seconds in microwave if desired

General Information

Flourless oatmeal cookies have become popular because they rely on natural binders like banana and nut butter. They’re nutrient-dense, naturally sweet, and incredibly forgiving—perfect for beginner bakers.

Frequently Asked Questions

Are these cookies vegan?
Yes—completely plant-based.

Do they taste like banana?
Only lightly. Peanut butter is the dominant flavor.

Can I make them crunchy?
Bake 1–2 minutes longer, but watch closely.

Can kids make these?
Absolutely—great first baking recipe!

Conclusion

These 3-Ingredient Healthy Peanut Butter Oatmeal Cookies prove that simple ingredients can still feel special. If you love easy, wholesome treats, you’ll also enjoy:

Interactive Elements

Tried them? Leave a review below!
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CaloriesFatCarbsFiberSugarProtein
1207g11g2g4g4g
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3-Ingredient Healthy Peanut Butter Oatmeal Cookies (No Flour, No Sugar)


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  • Author: Gianna Poulef
  • Total Time: PT15M
  • Yield: 8 cookies 1x

Description

Soft, healthy peanut butter oatmeal cookies made with just 3 ingredients. No flour, no added sugar, and ready in minutes.


Ingredients

Scale

1 cup natural peanut butter

1 cup rolled oats

1 ripe banana


Instructions

1. Preheat oven to 350°F and line a baking sheet.

2. Mash banana until smooth.

3. Stir in peanut butter until combined.

4. Fold in oats.

5. Scoop dough onto baking sheet and flatten.

6. Bake 8–10 minutes.

7. Cool slightly before serving.

Notes

– Use ripe bananas for sweetness.

– Cookies stay soft.

– Do not overbake.

  • Prep Time: PT5M
  • Cook Time: PT10M
  • Category: Snack
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 cookie
  • Calories: 120
  • Sugar: 4g
  • Sodium: 95mg
  • Fat: 7g
  • Saturated Fat: 1.5g
  • Unsaturated Fat: 5g
  • Trans Fat: 0g
  • Carbohydrates: 11g
  • Fiber: 2g
  • Protein: 4g
  • Cholesterol: 0mg
3-Ingredient Healthy Peanut Butter Oatmeal Cookies (No Flour, No Sugar)
Gianna Poulef
CEO, Chef & Recipe Creator at BLYNO LLC | Website

I’m Gianna Poulef from Poulef Recipes. I love sharing perfected dishes from my kitchen. I’m sure they’ll earn a spot in your heart. Let’s savor this journey together!.

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