These high protein oatmeal cookies are soft-centered, lightly chewy cookies made with rolled oats, peanut butter, Greek yogurt, and protein powder. They’re mixed in one bowl and baked until just set, making a satisfying snack that’s easy to customize with chocolate chips or dried fruit.
Ingredients
- 1 cup (90 g) old-fashioned rolled oats
- ¾ cup (90 g) all-purpose flour
- ½ cup (50 g) vanilla or unflavored whey protein powder
- ½ teaspoon baking soda
- ¼ teaspoon fine salt
- ½ teaspoon ground cinnamon
- ½ cup (125 g) creamy peanut butter, well stirred
- ⅓ cup (80 ml) pure maple syrup
- ¼ cup (60 g) plain Greek yogurt
- 1 large egg (about 50 g without shell)
- 1 teaspoon vanilla extract (5 ml)
- ⅓ cup (55 g) mini chocolate chips or raisins, optional
Instructions
- Heat the oven to 350°F (175°C). Line a large baking sheet with parchment paper. In a medium bowl, whisk together the oats, flour, protein powder, baking soda, salt, and cinnamon, breaking up any lumps in the protein powder.
- In a second bowl, stir the peanut butter, maple syrup, Greek yogurt, egg, and vanilla until smooth. Add the dry mixture and fold until no dry patches remain. Fold in the chocolate chips or raisins, if using. The dough should be thick and slightly tacky. If it is crumbly, mix in 1 teaspoon (5 ml) water at a time; if unusually wet, let it stand for 5 minutes so the oats can absorb moisture.
- Let the dough rest for 5 minutes, then divide it into 12 portions, about 2 tablespoons (35–40 g) each. Roll each portion into a ball and place them on the prepared sheet, leaving about 2 inches (5 cm) between cookies. Flatten each ball to roughly ½ inch (1.25 cm) thick; these cookies spread only a little.
- Bake for 10–12 minutes, until the edges look set and lightly golden while the centers still look slightly soft. Avoid waiting for the tops to brown deeply, as protein powder can make the cookies dry when overbaked. The egg is cooked in the baked cookie; for an egg-based dish, the USDA FSIS safe minimum is 160°F (71°C), checked with a food thermometer. If checking a cookie is impractical, bake until fully set rather than eating raw dough.
- Leave the cookies on the baking sheet for 5 minutes to firm up, then transfer them to a rack to cool. They will be delicate while hot and become chewier as they cool.
Tips
- Measure protein powder carefully. Weigh it if possible; packed scoops can add too much and leave the cookies dry. Whey, casein, and plant-based powders absorb liquid differently, so use the texture cues in step 2 rather than adding extra flour automatically.
- Use rolled oats, not steel-cut oats. Steel-cut oats stay too firm in this short bake. Quick oats can work, but the texture will be softer and less distinct.
- Choose a smooth nut butter. Natural peanut butter should be thoroughly stirred before measuring. If it is very runny, the dough may need a brief rest; if very stiff, loosen it with a teaspoon of water.
- Keep the cookies thick and don’t overbake. Flatten them evenly so they cook at the same rate. Pull them while the centers are still a little soft; they finish setting on the hot pan.
Serving Suggestions
Serve the cookies fully cooled with coffee, tea, or a glass of milk. For a snack plate, pair one or two with fresh fruit and plain yogurt. They also crumble neatly over a bowl of yogurt or oatmeal, where the chocolate or fruit in the cookies adds sweetness and texture. If packing them to take along, let them cool completely first so trapped steam does not soften them.
Variations
Swap the peanut butter for the same amount of almond butter or sunflower seed butter. Sunflower butter has a slightly earthier flavor and can sometimes turn baked goods green where it reacts with baking soda; this is harmless, though reducing the baking soda to ⅜ teaspoon can help. For a dairy-free variation, use a thick unsweetened plant-based yogurt and a protein powder suited to your diet; the dough may need a teaspoon or two of water because different powders absorb differently.
For a fruit-and-spice version, use raisins and add a pinch of nutmeg. For chocolate-peanut cookies, use chocolate protein powder and mini chocolate chips, keeping the same quantities. You can also replace the optional chocolate chips or raisins with ⅓ cup (40 g) chopped walnuts or pecans. Avoid adding several mix-ins at once, since too many can make the dough difficult to shape and cause the cookies to crumble.
Storage and Reheating
Cool the cookies completely, then store them in an airtight container. Because they contain egg and yogurt, refrigerate within 2 hours of baking; they keep for 3–4 days in the refrigerator. For longer storage, freeze in a sealed freezer-safe container for up to 2 months, separating layers with parchment. Thaw in the refrigerator or at room temperature, and do not leave thawed cookies out for more than 2 hours.
These cookies are pleasant at room temperature, so reheating is optional. To warm one, microwave it for about 8–12 seconds, checking before adding more time. If reheating multiple cookies, use a low oven setting and warm just until soft; excessive heat can dry them out.
Frequently Asked Questions
Can I make these cookies without protein powder?
Yes. Replace the ½ cup (50 g) protein powder with ½ cup (60 g) all-purpose flour. The cookies will have less protein and a more conventional oatmeal-cookie texture. The dough may be slightly softer, so chill it for 10 minutes if it is hard to shape.
Can I use quick oats?
Yes. Use the same weight, 90 g, for the most consistent result. Quick oats make a finer, softer cookie; old-fashioned rolled oats provide more chew. Don’t substitute steel-cut oats, which need a different cooking method.
Why did my cookies turn out dry?
The most common causes are too much protein powder, a very absorbent powder, or baking too long. Weigh the powder, check the dough before shaping, and remove the cookies as soon as the edges are set. A teaspoon of water added gradually can help bring crumbly dough together.
Can I make the dough ahead?
Yes. Cover and refrigerate the shaped or unshaped dough for up to 24 hours. Chilled dough is firmer, so flatten the portions before baking and expect that they may need about 1–2 extra minutes in the oven. Keep raw dough refrigerated and do not taste it because it contains uncooked egg.
Can I make these gluten-free?
Use certified gluten-free oats and a gluten-free all-purpose flour blend that is suitable for baking. Check that the protein powder is also labeled gluten-free. The texture can vary between flour blends, so use the dough consistency cues and avoid adding extra flour unless the dough is genuinely sticky and loose.
How do I know when they’re done?
The edges should look set and lightly golden, while the centers remain a little soft. They firm as they cool on the pan. If the centers still look wet or the cookies collapse after cooling, bake the next batch for another minute or two, taking care not to brown them deeply.
Related
- ICD-10 Code for History of Smoking: Z87.891
- Le Smoking BBQ: Smoked Pork Ribs with a Tangy Glaze
- Le Smoking BBQ Food Truck–Style Brisket Sandwiches
More recipes to cook
Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes
Spotted an error? Tell us and we will correct it (corrections policy).