Soft & Chewy Peanut Butter Greek Yogurt Muffin Squares

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By Gianna Poulef

Chewy Peanut Butter Greek Yogurt Muffin Squares

These Soft & Chewy Peanut Butter Greek Yogurt Muffin Squares are a fuss-free bake made with pantry staples and big comfort energy. They’re lightly sweetened, protein-rich, and bake up soft in the center with just enough structure to slice beautifully.

Perfect for breakfast, snacks, or that mid-afternoon “something” with coffee.

Overview of Recipe Content

These muffin squares are ideal for:

  • Quick breakfasts
  • Healthy-ish snacks
  • Lunchbox treats
  • Small-batch baking

Why you’ll love them

  • Made with Greek yogurt for moisture and protein
  • Naturally sweetened with honey
  • One bowl, no mixer
  • Soft, chewy, and never dry

What they taste like

Warm peanut butter flavor with gentle sweetness, a soft muffin-like crumb, and a lightly chewy bite—simple, comforting, and familiar.

Nutritional & Everyday Appeal

Greek yogurt adds protein, peanut butter brings healthy fats, and oat flour keeps things wholesome and filling without heaviness.

Full Ingredient List (Complete & Balanced)

This Now, Make It Later!

Muffin Squares Batter

  • 1/2 cup plain Greek yogurt (full-fat or 2%)
  • 1/4 cup natural peanut butter (creamy, unsweetened)
  • 1/4 cup oat flour (finely ground oats)
  • 2 tablespoons honey (or maple syrup)
  • 1 large egg
  • 1/2 teaspoon vanilla extract
  • 1/2 teaspoon baking powder
  • Pinch of salt

Optional Add-Ins

  • 2 tablespoons chocolate chips
  • 1 tablespoon chopped peanuts
  • Pinch of cinnamon

Tools You’ll Need

  • Mixing bowl
  • Whisk or fork
  • Spatula
  • 8×8-inch baking dish (or small loaf pan)
  • Parchment paper

Substitutions & Additions

  • Swap peanut butter for almond or cashew butter
  • Use maple syrup instead of honey
  • Add mashed banana for extra softness
  • Sprinkle oats or nuts on top before baking

How to Make Soft & Chewy Peanut Butter Greek Yogurt Muffin Squares

Step 1: Prep the Oven

Preheat your oven to 350°F (175°C) and line an 8×8-inch pan with parchment paper.

Step 2: Mix the Wet Ingredients

In a bowl, whisk together the Greek yogurt, peanut butter, honey, egg, and vanilla until smooth and creamy.

Step 3: Add the Dry Ingredients

Stir in the oat flour, baking powder, and salt until just combined. The batter will be thick but spreadable.

Step 4: Bake

Spread the batter evenly into the prepared pan. Smooth the top gently.

Bake for 18–22 minutes, until the center is just set and a toothpick comes out mostly clean.

Step 5: Cool & Slice

Let cool completely before slicing into squares. This helps them hold together and keeps the texture perfectly chewy.

What to Serve with Muffin Squares

  • Hot coffee or latte
  • Fresh berries or sliced banana
  • A drizzle of warm peanut butter
  • A spoonful of Greek yogurt

Tips for Making Them Perfect

  • Use room-temperature ingredients for best texture
  • Don’t overbake—soft is the goal
  • Let them cool fully before slicing
  • Store chilled for extra chewiness

Storage Instructions

  • Refrigerator: Up to 5 days in an airtight container
  • Freezer: Up to 2 months (wrap squares individually)
  • Reheat: 10–15 seconds in the microwave for a fresh-baked feel

General Information

Muffin squares are a home-baker favorite because they combine the tenderness of muffins with the ease of bar baking. This version leans into wholesome ingredients while keeping that classic, comforting texture.

Frequently Asked Questions

Are these gluten-free?
Yes, as long as you use certified gluten-free oats.

Can I make them dairy-free?
Use dairy-free yogurt and they work beautifully.

Are they sweet?
Lightly—perfect for breakfast or snacks.

Can I double the recipe?
Absolutely. Use a 9×13-inch pan and bake slightly longer.

Conclusion

These Soft & Chewy Peanut Butter Greek Yogurt Muffin Squares are proof that simple ingredients can create something deeply comforting. If you enjoyed these, you’ll also love:

Interactive Elements

Tried them? Leave a review below!
Share your squares on Pinterest and tag me here:
https://www.pinterest.com/poulefrecipe/

Nutritional Information (Approximate Per Square)

CaloriesFatCarbsProtein
1356g13g6g
Print
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Soft & Chewy Peanut Butter Greek Yogurt Muffin Squares


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  • Author: Gianna Poulef
  • Total Time: PT32M
  • Yield: 9 squares 1x
  • Diet: Vegetarian

Description

Soft and chewy peanut butter Greek yogurt muffin squares made with oat flour and honey.


Ingredients

Scale

1/2 cup Greek yogurt

1/4 cup peanut butter

1/4 cup oat flour

2 tablespoons honey

1 large egg

1/2 teaspoon vanilla extract

1/2 teaspoon baking powder

Pinch of salt


Instructions

1. Preheat oven to 350°F and line an 8×8 pan.

2. Mix Greek yogurt, peanut butter, honey, egg, and vanilla until smooth.

3. Stir in oat flour, baking powder, and salt.

4. Spread batter evenly into pan.

5. Bake 18–22 minutes until just set.

6. Cool completely and slice into squares.

Notes

– Do not overbake.

– Chill for firmer slices.

– Store refrigerated for best texture.

  • Prep Time: PT10M
  • Cook Time: PT22M
  • Category: Snack
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 square
  • Calories: 135
  • Sugar: 6g
  • Sodium: 90mg
  • Fat: 6g
  • Saturated Fat: 1g
  • Unsaturated Fat: 4g
  • Trans Fat: 0g
  • Carbohydrates: 13g
  • Fiber: 2g
  • Protein: 6g
  • Cholesterol: 25mg
Soft & Chewy Peanut Butter Greek Yogurt Muffin Squares
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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