Flourless Peanut Butter Cookies: The Ultimate Cheap, Quick & Chewy Student-Friendly Recipe

Plate of flourless peanut butter cookies on a student desk beside a laptop and notebook.

Why These Flourless Peanut Butter Cookies Are Every Student’s Best Friend

If you’ve ever stared into your almost-empty pantry wondering how the heck you’re supposed to whip up a dessert without flour… breathe. You’re about to meet the hero of your broke-but-craving-something-sweet era: flourless peanut butter cookies.

Yes — just three ingredients, NO flour, NO mixer needed, and absolutely no baking degree required. This recipe became a cult classic in my dorm freshman year… mostly because it saved all of us during those “I need something sweet before I lose my mind during finals” nights. And when I say these cookies taste like warm peanut butter heaven? I mean it.

In this guide, you’ll also learn how to customize them (chocolate, oats, protein powder, gluten-free hacks), how to store them in tiny dorm fridges, and why this recipe is perfect for chaotic student life.

Let’s get into it — your future favorite flourless peanut butter cookies are calling.

Why Students Love Flourless Peanut Butter Cookies

If there’s one dessert that checks all the student-life boxes, it’s flourless peanut butter cookies. Here’s why they’re trending everywhere from TikTok to campus kitchens:

1. They’re ridiculously cheap

A jar of peanut butter + sugar + an egg = less than $4 for 12–15 cookies. Compare that to $4 for one bakery cookie.

2. They’re perfect for tiny kitchens (or no kitchen)

No stand mixer. No food processor. No complicated steps. Just mix, scoop, bake, done.

3. They’re naturally gluten-free

So you can share them with friends without the “wait… is this safe?” moment.

4. They store incredibly well

If you can stop yourself from inhaling them all at once.

And yes — every time you bake these, someone will ask, “You made these from scratch?” Enjoy your moment of fame.

Ingredients for Flourless Peanut Butter Cookies

Peanut butter, sugar, and an egg on a dorm kitchen counter ready to make flourless cookies.

The Base 3-Ingredient Recipe (yes, really)

To make classic flourless peanut butter cookies, you just need:

  • 1 cup peanut butter (creamy recommended)
  • 1 cup sugar (white or brown — see tips)
  • 1 egg

Alt text for image: bowl of peanut butter, sugar, and egg on a countertop.

You can add vanilla, salt, chocolate chips, cinnamon… but honestly? The base recipe slaps all on its own.

How to Make Flourless Peanut Butter Cookies (Step-by-Step)

Step 1 — Preheat & Prepare

Preheat your oven to 350°F (175°C).
Line a baking sheet with parchment paper (or aluminum foil lightly greased).

Why this matters: Cookies with no flour are softer, so the parchment helps them keep shape.

Step 2 — Mix Your 3 Ingredients

In a bowl, combine:

  • 1 cup peanut butter
  • 1 cup sugar
  • 1 egg

Stir with a spoon until thick and smooth — about 30 seconds.

Step 3 — Scoop the Dough

Roll or scoop 1-tablespoon balls and place them on the baking sheet.

Pro tip: Dough too sticky? Chill 5 minutes.

Step 4 — Flatten with Fork Crosshatch

Press each cookie with a fork twice to create the classic crisscross pattern.

This helps the cookies bake evenly.

Step 5 — Bake

Bake 10–12 minutes until edges are set.
They will look soft — that’s correct! They firm as they cool.

Step 6 — Cool Before Touching

Let them cool 10 minutes before removing from tray.

Otherwise… cookie crumble chaos.

Stack of chewy flourless peanut butter cookies on a plate, showing their soft texture, labeled as a 3-ingredient easy recipe for college students.

Tips for the Best Flourless Peanut Butter Cookies

These hacks make your flourless peanut butter cookies taste bakery-level without spending bakery-level money.

✔ Use creamy peanut butter

Crunchy works but makes the cookies fall apart more.

✔ Switch up the sugar

  • White sugar = crispier edges
  • Brown sugar = chewier, deeper flavor

✔ Add a pinch of salt

If your PB is unsalted, ¼ teaspoon makes a huge difference.

✔ Avoid natural peanut butter if possible

The oil separation can make the cookies greasy.

✔ Underbake, don’t overbake

Remove them while the centers still look soft.

✔ Want thicker cookies?

Chill dough 10–15 minutes.

Cheap Student Variations You’ll Love

1. Chocolate Chip Flourless Peanut Butter Cookies

Add ½ cup chocolate chips. So easy, so elite.

Add 1 scoop vanilla protein powder + 1 tbsp milk if too dry.

3. Oatmeal Peanut Butter Cookies

Add ½ cup rolled oats for more texture and fiber.

4. Peanut Butter Banana Cookies

Mash ½ ripe banana into the dough for natural sweetness.

5. Spicy Autumn Version

Add cinnamon + nutmeg + a dash of pumpkin spice.

Every variation still tastes incredible — and still uses the flourless peanut butter cookies base.

Once you’ve mastered these flourless peanut butter cookies, you can try other easy 4-ingredient cookies when you want something just as simple but a little different.

How to Store Flourless Peanut Butter Cookies in a Dorm

Bowls of peanut butter, sugar, and an egg laid out to make flourless peanut butter cookies.

Room Temperature

Store in a sealed container up to 5 days.

Mini-Fridge Storage

Store up to 10 days in airtight container.

Freezer-Friendly

Freeze up to 3 months. Thaw 10–20 minutes before eating.

Bonus tip: Frozen cookies during summer finals hit DIFFERENT.

FAQ About Flourless Peanut Butter Cookies

1. Can I make flourless peanut butter cookies without sugar?

You can try sugar substitutes like stevia blends or monk fruit, but texture may change.

2. Can I make these cookies vegan?

Yes — replace the egg with:

  • 1 flax egg (1 tbsp flax + 3 tbsp water)
  • Or store-bought vegan egg replacer

3. Can I double or triple the recipe?

Absolutely! Just keep baking time the same.

4. Why are my cookies falling apart?

They might be:

  • Too warm when moved
  • Made with natural PB
  • Under-mixed

Let them cool fully before touching.

5. Can I make flourless peanut butter cookies in the air fryer?

Yes! Air fry at 350°F for 6–7 minutes.

Conclusion: Your New Go-To Flourless Peanut Butter Cookies Recipe

If you’re a busy student craving something sweet, fast, and insanely cheap to make, flourless peanut butter cookies are seriously the MVP of college desserts.
They’re foolproof, customizable, gluten-free, and made with ingredients most students already have sitting around in their dorm mini pantry.

Next time you want a quick energy boost, late-night study snack, or something to share with roommates, you’ll know exactly what to bake.

You’ve got this. And your cookies are about to smell amazing.

If you’re always looking for cheap desserts for college students, these flourless peanut butter cookies are a must-try, and you can check out even more budget-friendly sweet ideas here.

Stack of chewy flourless peanut butter cookies on a plate with textbooks and coffee in the background.

Flourless Peanut Butter Cookies

160kcal
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Prep 10 minutes
Cook 12 minutes
0 minutes
Total 22 minutes
These easy flourless peanut butter cookies are made with just three simple ingredients: peanut butter, sugar, and an egg. Perfect for busy students, they are cheap, quick, and naturally gluten-free.
Servings 15 cookies
Course Dessert
Cuisine American

Ingredients

  • 1 cup; 1 cup; 1 mixed; mixed; large peanut butter; sugar; egg

Equipment

  • Mixing bowl Medium-sized, for combining the dough.
  • mixing spoon Wooden spoon or sturdy spatula.
  • Baking sheet Standard size, lined with parchment paper.
  • Fork Used to flatten the cookies with a crisscross pattern.
  • Oven Preheated to 350°F (175°C).

Method

  1. Preheat the oven to 350°F (175°C) and line a baking sheet with parchment paper. In a medium bowl, stir together 1 cup peanut butter, 1 cup sugar, and 1 large egg until smooth and thick. Scoop or roll tablespoon-sized balls of dough and place them on the baking sheet. Flatten each ball gently with a fork in a crisscross pattern. Bake for 10 to 12 minutes, until the edges are set but the centers still look soft. Let the cookies cool on the baking sheet for at least 10 minutes before moving them so they can firm up.

Nutrition

Calories160kcalCarbohydrates15gProtein5gFat9gSaturated Fat2gPolyunsaturated Fat2gMonounsaturated Fat4gCholesterol15mgSodium90mgPotassium120mgFiber1gSugar13gVitamin A2IUCalcium2mgIron4mg

Notes

For best results, use creamy peanut butter that does not separate. Let the cookies cool fully on the baking sheet so they set and do not crumble when moved.

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