Peanut Butter Bars are a delicious and satisfying treat that everyone can enjoy. With a chewy texture and rich peanut butter flavor, these bars are perfect for dessert or as a snack. Whether you make them for a special occasion or just because, they are always a hit!

Why Make This Recipe
Making Peanut Butter Bars is a great choice for several reasons. First, they are quick and easy to prepare, making them perfect for beginner bakers. Second, they require simple ingredients that you likely have on hand. Finally, they are a crowd-pleaser! Friends and family will love these sweet and creamy bars.
How to Make Peanut Butter Bars
Making Peanut Butter Bars is straightforward and fun. Just follow the steps below, and you’ll have a tasty treat ready in no time!
Ingredients
- 1 cup brown sugar
- 1 cup granulated sugar
- 1 cup unsalted butter
- 1 cup creamy peanut butter
- 2 large eggs
- 1 teaspoon salt
- 1 teaspoon baking soda
- 2 cups rolled oats
- 2 cups all-purpose flour
- ½ cup unsalted butter (for frosting)
- 3 tablespoons unsweetened cocoa powder
- 3 ½ cups powdered sugar
- 1 teaspoon vanilla extract
- 6 tablespoons milk
- 1 cup creamy peanut butter (for spreading)
Directions
- Preheat your oven to 350°F (175°C). Grease a 9×13 inch baking dish.
- In a large bowl, mix the brown sugar, granulated sugar, and 1 cup of unsalted butter. Beat until creamy.
- Add the creamy peanut butter and mix well.
- Beat in the eggs, salt, and baking soda.
- Stir in the rolled oats and all-purpose flour until well combined.
- Pour the mixture into the prepared baking dish and spread it evenly.
- Bake for about 25-30 minutes, or until golden brown. Let it cool completely.
- For the frosting, melt ½ cup unsalted butter in a saucepan. Mix in cocoa powder.
- Remove from heat and add powdered sugar, vanilla extract, and milk. Mix until smooth.
- Spread the frosting over the cooled bars, then top with 1 cup of creamy peanut butter.
- Cut into squares and enjoy!
How to Serve Peanut Butter Bars
You can serve Peanut Butter Bars as they are, or pair them with a glass of cold milk. They make a great dessert on their own, or you can enjoy them as a sweet afternoon snack.
How to Store Peanut Butter Bars
To keep your Peanut Butter Bars fresh, store them in an airtight container at room temperature. They will stay good for about a week. If you want to keep them longer, you can freeze them for up to three months. Just make sure to wrap them well!
Tips to Make Peanut Butter Bars
- For a firmer texture, use less peanut butter in the frosting.
- If you like chocolate, try adding chocolate chips to the batter for extra flavor.
- Make sure the bars are completely cool before adding the frosting to prevent it from melting.
Variation
You can customize these Peanut Butter Bars by adding nuts or dried fruit to the batter. For a fun twist, try using crunchy peanut butter instead of creamy for added texture!
FAQs
1. Can I use natural peanut butter for this recipe?
Yes, you can use natural peanut butter, but it may change the texture slightly.
2. Can I make these bars gluten-free?
Yes, you can substitute all-purpose flour with a gluten-free flour blend.
3. How do I know when the bars are done baking?
The bars are done when they are golden brown on top and a toothpick inserted in the center comes out clean.
Now that you have the recipe and information, it’s time to bake and enjoy your Peanut Butter Bars!

Peanut Butter Bars
Ingredients
For the bars
- 1 cup brown sugar
- 1 cup granulated sugar
- 1 cup unsalted butter for the bars
- 1 cup creamy peanut butter
- 2 large eggs
- 1 teaspoon salt
- 1 teaspoon baking soda
- 2 cups rolled oats
- 2 cups all-purpose flour
For the frosting
- ½ cup unsalted butter for frosting
- 3 tablespoons unsweetened cocoa powder
- 3.5 cups powdered sugar
- 1 teaspoon vanilla extract
- 6 tablespoons milk
- 1 cup creamy peanut butter for spreading
Instructions
Preparation
- Preheat your oven to 350°F (175°C). Grease a 9×13 inch baking dish.
- In a large bowl, mix the brown sugar, granulated sugar, and 1 cup of unsalted butter. Beat until creamy.
- Add the creamy peanut butter and mix well.
- Beat in the eggs, salt, and baking soda.
- Stir in the rolled oats and all-purpose flour until well combined.
- Pour the mixture into the prepared baking dish and spread it evenly.
Baking
- Bake for about 25-30 minutes, or until golden brown. Let it cool completely.
Frosting
- For the frosting, melt ½ cup unsalted butter in a saucepan. Mix in cocoa powder.
- Remove from heat and add powdered sugar, vanilla extract, and milk. Mix until smooth.
- Spread the frosting over the cooled bars, then top with 1 cup of creamy peanut butter.
Serving
- Cut into squares and enjoy!


