Top 10 Most Sugary Cereals in the World 2025

Which cereals have the highest sugar content?

You'll start your day with a smile when you enjoy a bowl of sweet, delicious, crunchy cereal. The sweet life takes no effort, we tasted and reviewed the world's sweetest breakfast cereals, they are:

• #1. Kellogg’s Honey Smacks cereal 

• #2. Kellogg's Frosties

• #3. Cap'n Crunch Cereal

• #4. Post Oreo O's Breakfast Cereal

• #5. Post Golden Crisp Breakfast Cereal

• #6. Kellogg's Krave Chocolate Cold Breakfast Cereal

• #7. Post Chips Ahoy! Cereal

• #8. Kellogg's Cocoa Krispies Breakfast Cereal

• #9. Post Fruity PEBBLES Kids Cereal

• #10. Lucky Charms Gluten Free Kids Breakfast Cereal

These sweet breakfast cereals are great for adults and kids alike. Enjoy with milk or pack as a work snack or school lunch box.

But in today's health-conscious world, we don't recommend eating these decadent sweet treats every day long-term, but there's nothing wrong with wanting to give it a try or treat yourself.

They're also easily available online and conveniently delivered to your door, sometimes with cash back offers.

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Top 10 Sugariest Cereals, Ranked

Some cereals are overly sweet and some are not-so-sweet, but here are the cereals with the most sugar per serving.

#1. Kellogg’s Honey Smacks cereal 

($4.98 FROM Walmart - Get Up To 4% Cash Back)

• Sugars:18g

• Calories:130

• Dietary Fiber: 2g

• Serving Size: 36g

Do you really want sweet cereal? Perhaps Honey Smacks is the sweetest cereal many people have ever tasted!

Originally known as "Sugar Smacks," the cereal was renamed "Honey Smacks" in the 1980s to downplay its sugar content, but the sugar content remained the same.

With 18 grams of sugar per serving, this is easily the "highest sugar cereal".

This is a sweetened puffed wheat breakfast cereal made with honey and can be enjoyed with your favorite milk.

However, I don't enjoy eating this cereal much now because it no longer tastes as fresh as the ones I tried as a kid and the texture is chewy.

However, this cereal is made with whole grains, no high-fructose corn syrup, and is designed to give you energy in the morning, so maybe you really want to give this indulgent breakfast snack a try!

#2. Kellogg's Frosties

($9.99 FROM Amazon)

• Sugars: 17g

• Calories: 172

• Dietary Fiber: 0.6g

• Serving Size: 30g

Confuse? Is the breakfast cereal made from sugar-coated corn flakes called Frosted Flakes or Frosties?

They are the same, Frosted Flakes are suitable for the US and Canadian markets;

Frosties is popular in the UK, Ireland, Australia, and countries in Europe and the Middle East.

Frosties are one of the sugariest children's cereals, with a 30g breakfast bowl containing 17g of sugar - more than half the recommended daily intake for children aged 7 to 10.

The toasted crispy corn chips are sprinkled with sweet frosting, which really appeals to adults and children, so it became a best-selling product for a time.

#3. Cap'n Crunch Cereal

($4.54 FROM Amazon)

• Sugars: 17g

• Calories: 150

• Dietary Fiber: ~1g

• Serving Size: 38g

Cap'n Crunch Cereal contains 17 grams of sugar per serving, so as you can imagine, it's definitely sweet, but the recipe is a bit less sweet than it was years ago.

There are still plenty of people young and old who love this sweet, golden, crunchy cereal because it seems to strike a balance in every way, especially its signature sweetness and slightly crunchy texture that complement the milk.

In addition, Cap'n Crunch has a rich fruity flavor, so eat it as a snack!

#4. Post Oreo O's Breakfast Cereal

($4.93 FROM Walmart - Get Up To 4% Cash Back)

• Sugars: 17g

• Calories: 160

• Dietary Fiber: 1g

• Serving Size: 40g

Post Oreo O's Breakfast Cereal is undoubtedly a beloved staple in any sweet tooth's morning routine, delivering a delightfully delicious flavor to brighten up your day.

As a fan of Oreo cookies, I appreciate how this cereal captures the iconic flavor in a way that perfectly complements breakfast time.

The combination of Oreo cookie flavor and crunchy cereal creates a mouth-watering sensation that will take adults back to their childhood.

Not only can Post Oreo O's be enjoyed with milk, but they're also a delicious snack on their own, perfect for satisfying my sweet tooth throughout the day.

With 17 grams of sugar and only 1 gram of fiber per serving, Oreo O's are not a healthy snack, but they are a miracle snack.

#5. Post Golden Crisp Breakfast Cereal

($4.93 FROM Walmart - Get Up To 4% Cash Back)

• Sugars: 16g

• Calories: 110

• Dietary Fiber: ~0g

• Serving Size: 29g

Did you know that this box of cereal was originally marketed as a versatile cereal that could be eaten anytime from breakfast to dessert, and could even be used in place of candy?

The mascot's name is even Sugar Bear, and the first ingredient listed in the cereal is sugar (the third is corn syrup)! So it's no surprise that one bowl contains over 16 grams of the sweet treat.

Some people really like this sweet puffed wheat!

#6. Kellogg's Krave Chocolate Cold Breakfast Cereal

($4.98 FROM Walmart - Get Up To 4% Cash Back)

• Sugars: 15g

• Calories: 170

• Dietary Fiber: 2g

• Serving Size: 41g

When it comes to flavor, Kellogg's Krave delivers a delicious chocolate breakfast cereal.

The combination of a crunchy multigrain oatmeal shell and chocolate-flavored filling makes it a hit with chocolate lovers. Not only children, but even adults cannot resist its sweet temptation.

But when it comes to nutritional content, let's face it: With 15 grams of sugar per serving and only 2 grams of fiber, this isn't a healthy breakfast you can enjoy every day.

But, sometimes, I really miss this delicious taste of crispy outside and smooth chocolate inside.

#7. Post Chips Ahoy! Cereal

($4.93 FROM Walmart - Get Up To 4% Cash Back)

• Sugars: 14g

• Calories: 150

• Dietary Fiber: ~1g

• Serving Size: 38g

Oreos and Chips Ahoy! tend to have different audiences, as people who like Oreos may not like Chips Ahoy!, and vice versa. Post's cereals are available in Oreo flavors and Chips Ahoy! flavors. Same, they are high sugar cereals.

Personally, I also like the Chips Ahoy! flavor, exactly the same crunch, and more or less the same taste. A little more brown sugar flavor is the only difference.

Chips Ahoy! Cereal is a little sweeter than cookies, and its ability to retain its crunch in milk is perhaps its strongest attribute.

#8. Kellogg's Cocoa Krispies Breakfast Cereal

($5.48 FROM Walmart - Get Up To 4% Cash Back)

• Sugars: 12g

• Calories: 120

• Dietary Fiber: 0g

• Serving Size: 31g

Kellogg's Cocoa Krispies Breakfast Cereal is a bit pricey, but it doesn't taste as sweet as expected. Each 31g serving contains 12g of sugar, which is very high in sugar content. There's quite a bit of chocolate flavor, so it balances out some of the sweetness.

#9. Post Fruity PEBBLES Kids Cereal

($4.93 FROM Walmart - Get Up To 4% Cash Back)

• Sugars: 12g

• Calories: 140

• Dietary Fiber: 0g

• Serving Size: 36g

Most cereal lovers agree that Post Fruity PEBBLES is too high in sugar. Others, however, agree that this cereal is not only delicious, but also incredibly nostalgic.

These colorful gluten-free cereal slices will bring joy to kids' breakfast time. Fruity PEBBLES Rice Cereals deliver a sweet, fruity flavor with every scoop, inspiring kids' inner creativity.

When I was twelve years old, I fell in love with Post Fruity PEBBLES. I still eat it now, just less frequently. It's not as sweet as before and has less crunch, but the bright colors make me feel particularly appetizing.

#10. Lucky Charms Gluten Free Kids Breakfast Cereal

($4.93 FROM Walmart - Get Up To 4% Cash Back)

• Sugars: 12g

• Calories: 140

• Dietary Fiber: 3g

• Serving Size: 36g

Lucky Charms is a fan-favorite cereal that's great for breakfast and snacks.

This is another colorful cereal. Every box brings Lucky’s mix of marshmallow hearts, stars, horseshoes, clovers, blue moons, unicorns, rainbows and tasty red balloons to your breakfast table.

The cereal is sweet, really sweet, as it contains a whopping 12 grams of sugar.

However, we love this sweet Lucky Charms cereal and can also sprinkle it on top of ice cream, desserts, and iced cakes for an extra treat.

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