Top 10 Best High-Protein Cereals in 2021 (Kellogg's, Kashi, and More)

Kellogg's Special K Protein Breakfast Cereal is made with whole wheat and has a cinnamon flavor. With soy protein isolate, this flake cereal can supply you with 15 grams of protein per serving before even adding milk! It's also fortified with many vitamins and minerals like B vitamins, iron and vitamin D3.

Although some find the cereal to be a bit bland, the majority compliment that it has a nice crunchy texture and just the right amount of sweetness. According to them, the hint of cinnamon amps up the flavor, and the high protein content keeps them full for a while. It tastes great with almond milk and fresh fruit, reviewers comment. 

This cereal from Kashi is made with multigrain clusters, flax seeds, and almonds. It's lightly sweetened with honey and brown rice syrup. Each serving provides you with nine grams of protein and eight grams of fiber. It's a good source of ALA omega-3 as well! 

A few buyers experienced digestive problems after eating this cereal, since it contains a high amount of fiber. On another note, the majority mention that this cereal is sweet and delicious with a nice crunch. According to many, it's filling and provides sustained energy that will keep you fueled for a while.

Optimum Power cereal from Nature's Path is a blend of wholesome multigrain flakes with dried wild blueberries and cinnamon. With nine grams of protein and 16 grams of whole grains per serving, it gives you the needed energy to jump-start the day. The addition of flax seeds provides you with omega-3 fatty acids.

Some buyers think that this cereal doesn't have enough blueberries. Nevertheless, many others love that it is rich in fiber and protein while low in calories and sugar. They further note that it isn't too sweet and tastes delicious with milk, yogurt, and fruit.

Orginal Wheat Berry Flakes from Uncle Sam is made with four ingredients: whole wheat, flax seeds, salt, and barley malt. It's nutrient-dense, providing eight grams of protein, 10 grams of fiber, and less than one gram of sugar! Flax seeds are rich in omega-3 fatty acids to boost your heart health. 

For a few reviewers, this cereal is tasteless and hard. But the majority compliment that it's low in sugar, packed with protein, and is a healthy choice for breakfast. Many add fruit or nuts like bananas, berries, and almonds, or eat it mixed with yogurt. 

Quaker's Honey Nut Oatmeal Squares combine the goodness of whole grains with the sweet and scrumptious flavors of honey and nut. This cereal is pretty high in protein, giving you six grams per serving. It's also a good source of fiber and whole grains and makes a great breakfast cereal or snack.

Some reviewers comment that the honey and nut flavor is too subtle. However, most reviewers like that these oatmeal squares are not too sweet and are able to satisfy their snack cravings. They further mention that the squares are crunchy and remain that way in milk. 

Kay's Protein Cereal is crafted from a gluten-free blend of yellow corn flour, rice flour, and tapioca starch. It's available in three flavors. Each serving supplies 12 grams of protein derived from soy protein isolate. These small 1.2-ounce bags provide the perfect serving size and are easy to pack into lunches.

Some reviewers thought that this cereal was bland, and wanted more apple flavor. However, most share that it tastes natural and not overwhelming, has a crunchy texture, and fills them up. They also like the convenient individually-sized packages.

There are only four ingredients in this Three Wishes cereal: chickpeas, pea protein, tapioca, and salt. Each serving provides eight grams of protein. With no sugar, it's suitable for those who are trying to limit their sugar intake, but it comes in low-sugar flavors like cocoa or fruity as well.

Some buyers find the taste similar to salted chickpea. Some recommend adding stevia. Meanwhile, the majority are pleased that this cereal is made with only a few natural ingredients. They also praise the crunchy texture and add that it tastes great with milk or as a snack straight out of the box. 

With this variety pack, you'll get four flavors: peanut butter, frosted, cocoa, and fruity. So you can switch it up whenever you want or mix all the flavors together for a little extra fun. These cereals provide 11 grams of protein per serving. They also have no sugar and are great for those on a low-carb diet. 

A few buyers feel that the flavors of these cereals are a little fake-tasting. Even so, most reviewers like that they are low in carbs and sugar while packed with protein. Many say these cereals have a crunchy texture and make a great pre- and post-workout snack. 

Kind's Whole Grain Clusters are made from five whole grains: oats, millet, buckwheat, amaranth, and quinoa. It contains soy protein isolate and gives you 10 grams of protein per serving. This cereal is sweet and chocolatey! Enjoy it with some chocolate chunks and nuts for even more indulgence. 

Some buyers are concerned with the high fat content of this cereal. Nonetheless, many like that the chocolate flavor is spot on. They further say that it tastes fantastic with yogurt! 

Highkey's Protein Cereal contains milk protein isolate and gives you 10 grams of protein per serving. It's sweetened with monk fruit extract and erythritol and contains less than one gram of sugar per serving. It's keto-certified, gluten-free and comes in two other flavors.

Some reviewers find the boxes and portion sizes unrealistically small. Yet, many buyers, particularly those following a keto diet, consider this cereal a must-have as it's chocolatey, crunchy, and doesn't get mushy when milk is added. They enjoy these cocoa crispies with milk for breakfast or as a snack to satisfy their sweet cravings.