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4th of July Cookie Bars

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Updated:August 26, 2023
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4th of july red white and blue monster cookie bars

These soft & chewy 4th of July cookie bars are a festive spin on my traditional monster cookie bars! Add your favorite mix-ins and bake in a 9×13 pan for super easy peanut butter m&m cookie bars!

squares of 4th of july monster cookie bars
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Why I Love These 4th of July Cookie Bars

  1. Soft & Chewy: Packed with peanut butter, chewy oats, chocolate chips, and m&m’s, these are the perfect patriotic cookies!
  2. Easy to make: No scooping needed, just press into a 9×13 pan and bake! This is an easy recipe that is so much fun to make with kids, as it’s a pretty quick dump & bake recipe.
  3. Crowd-favorite: Monster cookie bars are always the perfect addition to a potluck or barbecue dessert table. These are perfect for both Independence Day or Memorial Day!

Want to make individual cookies? Make my monster cookies instead!

square of 4th of july monster cookie bar

Ingredient Notes

  • Quick Oats: These make chewy cookies and are ultimately what make them hearty monster cookies, so definitely don’t omit! Quick oats are affordable & easy to find at the grocery store but you can also use rolled oats (which make them even chewier!).
  • Peanut Butter: You want to use regular creamy peanut butter for these rather than all-natural peanut butter (since that’s more oily).
  • Light Corn Syrup: Adding just a little bit to the dough helps make it chewy and prevents it from being crumbly. You can also swap for a thick honey.

How to Make Patriotic Cookie Bars

🎥 Watch me make this on TikTok!

Step 1: Mix Dough

This is a thick dough so it’s best to use a stand mixer with the paddle attachment. But if you don’t have one, simply use an electric hand mixer up until you’re going to add the flour and oats, then mix by hand.

  1. Preheat oven to 350°F.
  2. In a large bowl, use an electric mixer to cream unsalted butter (¾ cup, i.e. 1 ½ sticks), granulated sugar (¾ cup), and light brown sugar (½ cup) for 2 minutes until light in color.
  3. Add in eggs (2 large), light corn syrup (3 tablespoons), and vanilla extract (2 teaspoons). Mix until combined.
  4. Add peanut butter (¾ cup) and mix until combined. Stir in baking soda (1 teaspoon) and salt (½ teaspoon).
  5. Add all-purpose flour (1 ¾ cups) and quick oats (1 Â¾ cups) and mix until just combined.
  6. Mix in chocolate chips (¾ cups) and m&m’s (¾ cups). Note that for this step, note that we’re only using ¾ cups of chocolate chips & ¾ cups m&m’s inside the dough so that we can reserve the other ¼ to press on top.
bowl of fourth of july monster cookie bar dough

Step 2: Press Into Pan & Bake

Drop cookie dough into a greased or parchment-lined light-colored aluminum 9×13 pan and spread until smooth. The dough will be a little sticky, so it’s easiest to drop the dough into small pieces instead of adding it in one big blob. Sprinkle the remaining Â¼ cup chocolate chips, Â¼ cup of m&m’s, and Â¼ patriotic sprinkles on top and gently press into the dough.

Bake at 350°F for 28-32 minutes until the edges and top are lightly golden brown and the center no longer looks wet. Do not overbake or your bars can get dry and will not be as soft and chewy. You want the cookie bars to be lightly brown on the edges and top. Remove from oven and place entire pan on a cooling rack.

9x13 pan of fourth of july unbaked monster cookie bars
9x13 pan of fourth of july monster cookie bars

Step 3: Cut into Squares

Allow the cookie bars to cool completely before removing from pan. If you cut the bars when they’re still warm, they will be crumbly and fall apart. For the cleanest cuts, they need to be fully cooled and/or slightly chilled before cutting. Slice into 12-24 squares, then enjoy!

squares of 4th of july monster cookie bars

Tips & Variations

  • Switch up the mix-ins: You could add white chocolate chips, OREO chunks, or other types of patriotic sprinkles on top!
  • Pair with sugar cookie bars: For all the non-chocolate people, make a batch of my soft sugar cookie bars and top with red, white, and blue sprinkles! Or for individual cookies, make my Lofthouse style soft sugar cookies. Festive 4th of July cookies don’t have to be fancy or decorated with royal icing – easy cookies for the win!

Storage & Freezing

  • Storage:  To keep fresh, cover pan with saran wrap or place bars in airtight container for up to 3 days (after that they start to dry out).
  • Freeze: Store in a tightly sealed airtight container and freeze for up to 1 month.
squares of 4th of july monster cookie bars

Frequently Asked Questions:

Can I use rolled oats instead of quick oats?

Yes, I use quick oats since they’re cheaper but you can use rolled oats for a chewier texture.

Can I use all-natural peanut butter?

I highly suggest using creamy peanut butter for these rather than all-natural peanut butter (since that’s more oily).

I’ve even found that some brands of regular creamy peanut butter are more runny than others, which can affect how wet the dough is. I’ve made these with both Kroger off-brand and Skippy and the Skippy results in a stickier dough (which is fine, just a little harder to spread into the pan!).

Can I omit the corn syrup?

The corn syrup helps hold everything together and create a chewy & moist texture. Honey is the best substitute, they will just be a little less moist.

Looking for more red, white and blue dessert ideas?

Here are a few of other go-to 4th of July dessert bars that are made in a 9×13 pan and are easy to decorate for a Memorial Day or July celebration!

  • Sugar Cookie Bars: Decorate with colored frosting and sprinkles for a cute & easy dessert! Or, use frosting to decorate like a flag cake.
  • Fruit Pizza Bars: This recipe has a delicious cream cheese frosting that you can decorate with blueberries & strawberries!
  • Ice Cream Sandwich Cake: This layered dessert is super easy to make with ice cream sandwiches, whipped cream, hot fudge, and caramel sauce. You can top with patriotic sprinkles or red, white, and blue candies for the most delicious summer dessert!

Did you make this recipe? If so, will you do me a huge favor and leave a review and rating letting me know how you liked this recipe? This helps my small business thrive so I can continue providing free recipes and high-quality content for you.

4th of July Monster Cookie Bars

These soft & chewy 4th of July Cookie Bars are a festive spin on my traditional monster cookie bars! Perfect for Memorial Day & summer potlucks!

Author: Melissa Rose
Prep Time: 15 minutes
Cook Time: 28 minutes
Total Time: 1 hour
Course: Dessert
Category: Cookie
Keyword: monster cookie bars
Servings: 12 -24 squares
squares of 4th of july monster cookie bars
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Ingredients

  • ¾ cup unsalted butter (not margarine)
  • ¾ cup granulated sugar
  • ½ cup light brown sugar
  • 2 eggs
  • 3 tablespoons light corn syrup You can also use honey
  • ¾ cup creamy peanut butter
  • 2 teaspoons vanilla extract
  • 1 teaspoon baking soda
  • ½ teaspoon salt
  • 1 ¾ cups all-purpose flour
  • 1 ¾ cups quick oats
  • 1 cup semi-sweet chocolate chips, divided We're using ¾ cup in the dough & ¼ on top
  • 1 cup red, white, blue m&m's, divided We're using ¾ cup in the dough & ¼ on top
  • ¼ cup red, white, blue sprinkles
US Customary – Metric

Before you begin! If you make this, will you do me a huge favor and leave a review and rating letting me know how you liked this recipe? This helps my small business thrive so I can continue providing free recipes and high-quality content for you.

Instructions

  1. Preheat oven to 350°F.

  2. In a large bowl, use an electric mixer to cream unsalted butter (¾ cup, i.e. 1 ½ sticks), granulated sugar (¾ cup), and light brown sugar (½ cup) for 2 minutes until light in color.

  3. Add in eggs (2 large), light corn syrup (3 tablespoons), and vanilla extract (2 teaspoons). Mix until combined.

  4. Add peanut butter (¾ cup) and mix until combined. Stir in baking soda (1 teaspoon) and salt (½ teaspoon).

  5. Add all-purpose flour (1 ¾ cups) and quick oats (1 ¾ cups) and mix until just combined.

  6. Mix in chocolate chips (¾ cups) and m&m's (¾ cups).

    Note: For this step, note that we're only using ¾ cups of chocolate chips & ¾ cups m&m's inside the dough so that we can reserve the other ¼ to sprinkle on top.

  7. Drop dough into a greased or parchment-lined metal 9×13" pan and spread until smooth. The dough will be a little sticky, so it's easiest to drop the dough into small pieces instead of adding it in one big blob.

    Sprinkle the remaining ¼ cup chocolate chips, ¼ cup of m&m's, and ¼ cup sprinkles on top and gently press into the dough.

  8. Bake at 350°F for 28-32 minutes until edges and top are lightly golden brown and the center no longer looks wet. Do not overbake or your bars can get dry and will not be as soft and chewy. You want the cookie bars to be lightly brown on the edges and top. Remove from oven and place entire pan on a cooling rack.

  9. Allow the cookie bars to cool completely before removing from pan. If you cut the bars when they're still warm, they will be crumbly and fall apart. For the cleanest cuts, they need to be fully cooled and/or slightly chilled before cutting.

  10. Slice into 12-24 squares, then enjoy! To keep fresh, cover pan with plastic wrap or place bars in airtight container for up to 3 days (after that they start to dry out). See notes below for freezing tips.

Last Step! Please leave a review and rating letting me know how you liked this recipe! This helps my small business thrive so I can continue providing free recipes and high-quality content for you.

Recipe Notes

  • Chocolate chips: While I use semi-sweet chocolate chips, you can also use milk, dark, or white chocolate!
  • To freeze: To freeze, cool the bars completely before placing them into an airtight container or freezer bag for storage. These will keep in freezer for 1-2 months.

Nutrition information is calculated using an ingredient database and should be considered an estimate. Nutrition amounts based on 12 squares.

Nutrition

Calories: 607kcal
Fat: 31g
Saturated fat: 15g
Trans fat: 1g
Polyunsaturated fat: 3g
Monounsaturated fat: 9g
Cholesterol: 61mg
Sodium: 379mg
Potassium: 265mg
Carbohydrates: 74g
Fiber: 4g
Sugar: 47g
Protein: 10g
Vitamin A: 440%
Vitamin C: 0.1%
Calcium: 62%
Iron: 3%

Did you make this?
Tag me on Instagram @designeatrepeat or leave a comment below to let me know how it turned out! I love seeing what you’ve made.
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Melissa is a graphic designer & craft stylist living in the Midwest, specializing in easy food and paper crafts for holidays, parties, and everyday.
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