Ruler Rice Krispie Treats: Easy Recipe for Back to School

Turn a classic rice cereal treat into ruler Rice Krispie treats. An easy, and fun snack to make for back to school snacks. Or, to sell at a Fall bake sale. These chewy marshmallow desserts are so easy to make, and always a favorite with kids and adults alike.

About Ruler Rice Krispie Treats

There are two ways to make these ruler Rice Krispie treats. The quickest and easiest way to do it is to take store bought rice cereal treats and decorate them to look like rulers. This approach is great when you don’t want to mess with making the treats from scratch. Or, if you just want to make one or two rulers. But if you do want to make the Rice Krispie treats yourself, I’ve shared that recipe below.

A gray plate with ruler Rice Krispie treats on it. The ruler shaped rice cereal treats have lines on them to represent ruler measurements

Easy Method to Make Ruler Treats

Lets start by going with the easiest way to make these Rice Krispie rulers. Start with store bought Rice Krispie treats. The standard size is about 2.25″ by 1.75″. I think that this is the perfect size for a mini ruler, but you can shape it to be a little longer and thinner if you prefer. In addition to the rice cereal treats, the only other ingredient you need is black candy melt.

A bowl of rice krispie treats and a bowl of candy melt

Lay the rice cereal treats on parchment paper. Then melt the candy melts in the microwave in 30 seconds intervals until the chocolate is smooth when stirred. Transfer the melted chocolate to a piping bag and snip the end to make a small opening. If you don’t have black candy melts, you could also use dark chocolate.

Parchment paper topped with rice cereal treats and a piping bag with melted black chocolate

With the melted chocolate, draw the lines like you’d see on a real ruler. Make one taller line, then 3 smaller lines. Repeat the pattern to the other end of the ruler Rice Krispy treat.

Parchment paper topped with rice krispie treats with lines on them to look like ruler markings

And that’s all there is to it for making these cute ruler Rice Krispie treats using cereal treats that you can get from Amazon, or the grocery store. This is an inexpensive, and easy, way to make decorated Rice Krispie treats for a bake sale or school party.

If you purchased a box of 40 or 60 treats, the cost is usually about 30 cents per treat. Candy melts would be less than 10 cents to decorate these treats, so all total you’re talking about less than 50 cents to make each ruler. Sell it for $2 at a school bake sale and you’ve got a great profit margin.

How to Make Rice Krispie Treats from Scratch

Now if you’d like to make the rice cereal treats from scratch, it’s a super easy recipe. You can use mini marshmallows instead of the large marshmallows if you’d like, but the bigger marshmallows give you some bigger chunks of melted marshmallow which I think makes the treats extra gooey.

Step by Step With Photos

Line a 9โ€ณx13โ€ณ baking pan with parchment paper, or aluminum foil. Let some excess hang over the sides so that itโ€™s easy to remove the rice crispy treats from the pan. I also like to start by getting theย 6 cups Rice Krispie cerealย measured in a bowl and set aside until needed.

Add 5 Tablespoons butter to a large saucepan. Heat over medium heat until melted. Add 10 ounces of marshmallow to the pan and stir to combine. If you’d like a flavor boost, once the marshmallows are melted add 1 teaspoon vanilla extract and 1/4 teaspoon salt.

A saucepan with melted butter
A saucepan with marshmallows added to melted butter

Remove the pan from the heat and immediately add 6 cups rice cereal to the melted butter and marshmallow mixture. Stir until combined and then transfer the mixture to the prepared baking pan. Gently press the mixture into the pan so that it’s evenly distributed.

A mixture of rice krispie treats
A Rice Krispie mixture spread in a pan

Let the Rice Krispie mixture cool. Once cool, or when you’re ready to decorate, use the excess parchment paper to lift the mixture out of the pan. Place on a cutting board and cut the treats into long strips.

You should be able to cut 5 long strips per pan of treats . Then you can cut each strip into 5 smaller sections. This will yield ruler treats that are approximately 1.8″ tall by 2.5 inches long. You can adjust the cuts if you prefer smaller, or larger, sized treats.

A pan of rice krispie treats being cut into strips

Then follow the steps above to decorate the treats to look like rulers. Let the chocolate set before placing them in an airtight container. Or, wrapping them to sell at a bake sale. These ruler Rice Krispie treats will remain fresh for at least a week when stored in an airtight container.

Whether you choose to make the rice cereal treats from scratch, or use premade treats, I hope you enjoy transforming a standard rice cereal treat into a cute back to school snack. It’s amazing how just a little bit of chocolate can dress-up a snack and make it a little extra special.

A gray plate with ruler rice krispie treats on it

Want more fun and easy Rice Krispie treat recipes? For another cute and easy back to school snack, try these Pencil Rice Krispie Treats. Or, try these colorful Sprinkle Rice Krispie Treats. Loaded with sprinkles and a chocolate drizzle, these treats are a perfect party snack.

If you try thisย Ruler Rice Krispie Treatsย recipe, or any other recipe on my blog, please leave a ๐ŸŒŸย star ratingย and tell me how it went in the ๐Ÿ“ย commentsย below. Thanks for visiting and happy baking!

A gray plate with ruler Rice Krispie treats on it.

Rice Cereal Treats Recipe

A chewy marshmallow treat.
Prep Time 15 minutes
Total Time 15 minutes
Course Dessert
Cuisine American
Servings 16 bars

Equipment

  • Spatula
  • Sauce Pan
  • Parchment Paper
  • 9 X 13 Inch Baking Pan
  • Measuring Spoons
  • Measuring Cups

Ingredients
  

  • 6 Cups Rice Cereal
  • 10 Ounces Marshmallows
  • 5 Tablespoons of Butter + extra for spatula
  • 1 teaspoon vanilla extract optional
  • 1/4 teaspoon salt optional

Instructions
 

  • Grease a 9×13 inch baking dish, or line it with parchment paper. If you want to be able to remove the treats from the pan to cut them up, then be sure to leave a little bit of extra paper on the sides of the dish to use as handles to lift it out.
  • Measure 6 cups of rice cereal and set aside.
  • Melt the butter in the sauce pan over medium heat until completely melted.
  • Add the marshmallows to the pan. Rub some butter on your spatula and slowly mix the marshmallows until completely melted.
  • Add the vanilla extract and salt, if you'd like a flavor boost.
  • Remove the pan from the heat and immediately add the rice cereal to the pan. Use the spatula to mix the ingredients until the rice cereal is combined with the marshmallows.
  • Pour the rice cereal mixture into the prepared baking pan. Use the spatula to spread and flatten the rice cereal treat.
  • Let the rice cereal treat cool.
  • Once cooled, you can remove from the pan and cut into individual bars.

Notes

  • These rice cereal treats can be stored in air tight container in a cool dry place for 3-4 days.
  • If you donโ€™t have parchment paper, you can use the extra butter to grease the baking pan. It will allow the rice cereal to be removed easily.
Keyword A marshmallow rice cereal treat
Tried this recipe?Let us know how it was!

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Kristen

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