Gooey Protein Chocolate Chip Cookies

These gooey protein chocolate chip cookies are soft, thick, and packed with 12 grams of protein and only 7 grams of sugar — but they taste like a real bakery cookie, not a protein bar. The secret is an extra egg yolk and a short dough rest, which keeps them fudgy and chewy rather than dry and cakey.

5 from 3 votes

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Prep Time 12

Cook Time 8

Total Time 20

Serving cookies

Ingredients

1 cup natural peanut butter or cashew butter
⅓ cup brown sugar, or coconut sugar
2 large eggs
1 egg yolk
1 tablespoon melted coconut oil
2 tablespoon oat flour
½ cup whey protein powder, spooned & leveled, do not pack the scooper or cookies will be dry (about 1 scoop)
½ teaspoon baking soda
½ teaspoon salt
1 teaspoon vanilla extract
⅓ cup chocolate chips, plus more for topping

Instructions

Preheat oven: Preheat oven to 350°F and line a baking sheet with parchment paper.
Mix wet ingredients: In a large bowl, whisk together the nut butter, brown sugar, eggs, egg yolk, and melted coconut oil until smooth and fully combined.
Add dry ingredients: Add the oat flour, protein powder, baking soda, and salt. Mix with a spatula until mostly combined, then fold in the chocolate chips.
Rest the dough: Let the dough sit for 5–10 minutes so the protein powder can hydrate (this helps the texture a lot).
Scoop cookies: Use a large cookie scoop (about 2 tablespoon per cookie) and place dough balls 2 inches apart on the baking sheet. Press a few extra chocolate chips on top.
Bake: Bake for about 8 minutes, until the edges are lightly golden (centers will look soft—that’s perfect).
Finish: Right out of the oven, gently press the tops down with a spatula for that chewy, crinkly look. Sprinkle with flaky salt.
Cool: Let cool before serving—they’ll firm up as they set.

Notes

Protein Powder: This recipe works with most vanilla whey protein powders. Avoid powders with xanthan gum or thickeners — they absorb too much moisture and make cookies tough. I don't recommend collagen powder for this recipe.

Peanut Butter: Use a stir-together creamy style, not the no-stir kind. If there's a pool of oil on top, pour some off — too runny and the cookies will spread flat.

Dough Rest: Don't skip the 5–10 minute rest. It lets the protein powder hydrate so the cookies stay soft and gooey instead of dry.

Bake Time: Pull them out when the centers still look underdone — they firm up as they cool. Overbaking by even 1–2 minutes turns them cakey.

Storage: Store in an airtight container at room temperature for up to 5 days, or freeze for up to 3 months.

Nutrition

Course Dessert

Cuisine American

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