Best High Protein Cereals Ranked
We compared every major protein cereal on the market. Here's how they stack up on protein per serving, fiber content, and price per gram of protein.
The Bottom Line
Ghost Protein Cereal has the most protein (18g per serving), but Catalina Crunch wins for overall nutrition with 11g protein AND 9g fiber. For budget shoppers, Kashi GO offers 11g protein with 13g fiber at half the price.
Protein Cereals Ranked
Ranked by protein per serving. Click any card to see details.
A collaboration between Ghost (the supplement company) and General Mills. This puff-style cereal delivers more protein per serving than any competitor, with fun nostalgic flavors.
Flavors:
Best for: Protein maximizers who want the most protein per bowl.
Downside: Only 1g fiber. Not keto-friendly (12g net carbs). Higher sugar than some alternatives.
The original high-protein cereal that kickstarted the category. Nails the taste of childhood cereals (Fruity, Cocoa, Peanut Butter, Frosted) with zero sugar and only 4g net carbs.
Best for: Nostalgic flavors without the sugar crash. Keto dieters.
Downside: Only 1g fiber. Dairy-based (not vegan). Priciest option.
The cereal we reach for most often. With 11g protein AND 9g fiber per half-cup serving, it delivers on both protein and fiber goals. Zero sugar, 5g net carbs, made from pea protein.
Best for: Anyone targeting both protein and fiber. Great for keto. Plant-based eaters.
Downside: Smaller serving size than competitors. Some find the texture dense.
At roughly half the price of premium protein cereals, Kashi GO delivers excellent nutrition from whole grains. The Original flavor has an impressive 13g of fiber alongside 11g protein.
Best for: Budget-conscious shoppers. Fiber goals. Those who prefer whole grain sources.
Downside: Higher net carbs (27g). Contains some sugar (8g). Not keto-friendly.
Good chocolate flavor with solid fiber content. A tasty option for those who want chocolate cereal with nutritional benefits.
Best for: Chocolate lovers who want protein and fiber.
Downside: Higher sugar (9g). Not keto-friendly.
Widely available at most grocery stores. Touch of cinnamon flavor. A mainstream option for protein cereal.
Best for: Those who want an affordable, widely available option.
Downside: Lower fiber (3g). Higher sugar (9g). Higher calories per serving.
Grain-free cereal made from chickpea protein. Allergen-friendly (no peanuts). Good for those avoiding common allergens.
Best for: Those with grain allergies. Allergen-conscious households.
Downside: Lower protein (8g). Most expensive per gram. Moderate fiber.
Organic cereal with good omega-3s from flax. A whole food approach to protein cereal with balanced nutrition.
Best for: Those seeking organic, whole grain options with omega-3s.
Downside: Lower protein (6g). Not a primary protein source.
Lower protein but kid-friendly flavor. Made with pea protein for a plant-based option.
Best for: Families with kids. Those wanting a lighter option.
Downside: Lowest protein on the list (5g). Not ideal as a protein source.
💰 Is protein cereal worth it?
Protein cereal costs 2-4x more per gram than eggs or yogurt. The value is convenience and variety, not cost efficiency.
How to Add Protein to Any Cereal
Even the highest protein cereals top out at 18g per serving—that's only 60% of a 30g target. The smarter approach: use protein cereal as a topping on Greek yogurt or cottage cheese to combine sources.
Don't want to buy specialty protein cereal? Here's how to boost the protein content of whatever cereal you already have.
Protein Boosters
Example: 30g Protein Cereal Bowl
This approach lets you use any cereal you enjoy while still hitting your protein target.
Frequently Asked Questions
Ghost Protein Cereal leads with 18g of protein per serving. Catalina Crunch (11g), Kashi GO (10-11g), and Magic Spoon (13g) are also high-protein options. However, no cereal alone provides 30g of protein in a reasonable serving size.
Protein cereals cost $0.80-1.50 per gram of protein, making them 4-6x more expensive than eggs or Greek yogurt. They're best used as a topping for yogurt or cottage cheese rather than your primary protein source. The convenience may be worth it for some, but they're not the most economical protein choice.
It's difficult. Even the highest protein cereals (18g per serving) would require nearly 2 servings to hit 30g, meaning 340+ calories and a lot of volume. A better approach: use cereal as a crunchy topping on Greek yogurt or cottage cheese to combine protein sources.
Catalina Crunch offers the best nutritional profile with 11g protein, 9g fiber, and 0g sugar per serving. Kashi GO is also excellent with 10-11g protein and 10-13g fiber from whole grains. Both provide substantial fiber along with protein.
The easiest ways to boost cereal protein: use it as a topping for Greek yogurt (+17g per cup), pour protein milk instead of regular milk (+13g per cup), add a scoop of protein powder to your milk (+25g), or sprinkle hemp seeds on top (+6g per 2 tbsp).
Magic Spoon is a decent protein option with 13g protein, 0g sugar, and low net carbs per serving. However, it only has 1g of fiber and uses dairy-based proteins (whey/casein). It's healthier than sugary cereals but not as nutritious as options like Catalina Crunch which has 9g fiber.
More Ways to Hit 30g at Breakfast
Cereal is just one option. Explore our complete guide to high-protein breakfasts for more ideas that fit your lifestyle.