Last Updated on March 7, 2024 by Lindsay Delk, RDN
These oatmeal peanut butter squares are a delicious snack that satisfies your sweet tooth while offering nutritious goodness. Perfect for both children and adults, these treats double as a snack or a healthier dessert alternative, ticking all the boxes for taste, health, and convenience.
This post was written by Lindsay Delk, RDN. It is for informational purposes and is not intended to replace medical advice or instructions given by your healthcare provider.Â

Why You’ll Love Oatmeal Peanut Butter Squares
The #1 reason you’ll love these oatmeal peanut butter squares is because they are delicious! My son and I love these! They are the perfect blend of rolled oats, creamy peanut butter, honey, and dark chocolate. They satisfy your craving for something sweet while delivering a punch of protein and fiber.
These delectable treats strike a balance between indulgence and nutrition. They are easy to make and even easier to enjoy. Whether you’re powering through a busy day or winding down with a cup of tea, they offer a satisfying way to treat yourself.
Recipe Ingredients & Mental Health Benefits
- Peanut butter or another nut butter
- Honey
- Vanilla extract
- Salt
- Rolled oats (old-fashioned oats)
- Chopped nuts your choice
- Mini semi-sweet chocolate chips
- Flax meal
While these squares are not low in calories, they are high in fiber, protein, B vitamins, folate, vitamin E, iron, magnesium, selenium, and zinc. Most of these are antidepressant nutrients according to research. I also included flax meal to increase the amount of omega-3 fats in the squares. Consuming foods rich in these nutrients supports not only physical health but also mental health.
How to Make Oatmeal Peanut Butter Squares
In a medium-sized bowl, stir together the peanut butter, honey, vanilla extract, and salt until smooth.

Stir in the rolled oats, chopped nuts, mini chocolate chips, and flax meal. Use your hands to combine the ingredients if needed.

Line an 8″x 8″ or 9″x 9″ pan with parchment paper. Firmly press the mixture into the pan to form an even layer.

Chill for at least 1 hour then cut into 9 squares. Cut each square in half to form 18 bars if desired. Store the squares in the fridge.

Tips, Variations, & Substitutions
Feel free to experiment and make these oatmeal peanut butter squares truly your own. They’re forgiving enough for novice bakers and versatile for the experienced to play with. Remember, the key to these squares is combining flavors you love with nutritious ingredients.
- Cut each square in half to make 18 bars or in quarters to make 36 mini squares, if desired.
- For an added twist, try incorporating different mix-ins, such as dried fruits, seeds, or different nuts.
- If you have a peanut allergy, try almond butter, sunflower seed butter, or pumpkin seed butter.
- For a vegan-friendly version, substitute maple syrup or agave nectar for the honey.
- Substitute chia seeds for the flax meal if desired. They still provide those valuable omega-3 fats.
Oatmeal Peanut Butter Squares FAQ
How do I store the oatmeal peanut butter squares? Can I freeze them?
I love to make these on the weekend and store them in the refrigerator in a sealed container. Then they are ready to grab and go. I have also frozen the squares. Cut them to your desired size, separate them with wax paper, and place them in an airtight container or freezer bag. When you’re ready to eat them, thaw them at room temperature or in the refrigerator before eating.
Are these oatmeal peanut butter squares gluten free?
Yes, because oats are gluten free, you can enjoy these scrumptious squares without any worries. While oats are naturally gluten-free, they are sometimes processed in facilities that handle gluten-containing grains, which can lead to cross-contamination. For those with celiac disease or a severe gluten intolerance, use oats that are certified gluten-free just to be sure.
Can I use quick oats instead of rolled oats?
Yes, you can use quick oats in place of rolled oats for this recipe. Keep in mind that quick oats have a finer texture and may make the squares a bit denser. They also absorb moisture faster, so you might need to adjust the wet ingredients slightly for the perfect consistency.

Bottom Line
Oatmeal peanut butter squares are a healthy treat that blend the rich flavors of peanut butter and chocolate with the wholesome benefits of oats and flaxseed. Whether you’re in need of a quick energy boost or a moment of decadence, these squares are sure to be a scrumptious addition to your snacking routine.
Check Out These Other Oat Recipes
Blueberry Cheesecake Overnight Oats
Overnight Oats with Frozen Fruit and Almonds

Oatmeal Peanut Butter Squares
Ingredients
- 1 cup peanut butter or another nut butter
- 2/3 cup honey
- 1 tsp vanilla extract
- 1/2 tsp salt
- 2 1/2 cups rolled oats old-fashioned oats
- 1/3 cup chopped nuts your choice
- 1/3 cup mini semi-sweet chocolate chips
- 2 Tbsp flax meal
Instructions
- Stir together the peanut butter, honey, vanilla extract, and salt in a bowl until smooth.
- Stir in the rolled oats, chopped nuts, mini chocolate chips, and flax meal. Use your hands to combine if needed.
- Line an 8"x8" or 9"x9" pan with parchment paper.
- Firmly press the mixture into the pan to form an even layer.
- Chill for at least 1 hour then cut into 9 squares. Cut each square in half to form 18 bars if desired. Store the squares in the fridge.
Notes
- Cut each square in half to make 18 bars or in quarters to make 36 mini squares, if desired.
- For an added twist, try incorporating different mix-ins, such as dried fruits, seeds, or different nuts.
- If you have a peanut allergy, try almond butter, sunflower seed butter, or pumpkin seed butter.
- For a vegan-friendly version, substitute maple syrup or agave nectar for the honey.
- Substitute chia seeds for the flax meal if desired. They still provide those valuable omega-3 fats.
