Super Easy 4 Ingredient Peanut Butter Cookie with a Cake Mix

3.85 from 63 votes

4 ingredients is all you need for the most delicious and soft peanut butter cookies that you have ever tasted.

Prep Time5

Cook Time40

Total Time45

Course: Dessert

Cuisine: American

Servings: cookies

Calories: 176kcal

Preheat the oven to 350°.
Combine the cake mix, peanut butter, cooled melted butter and eggs in a large bowl and mix with a hand held mixer {or by hand} until completely incorporated.
Using a medium cookie scoop {1.5 tablespoon} to scoop cookie dough mounds into a bowl with sugar. Roll cookie dough balls completely in sugar and place onto a silicone mat {or parchment} lined cookie sheet. Using the tines of a fork make a crisscross pattern into the top of each cookie.
Bake for 8-10 minutes, remove from the oven and let cool on a cookie sheet for 10 minutes before moving them to a cooling rack. Repeat until all of the dough is baked.
Store in an airtight container for up to 4 days or freeze for 3 months.

Let the melted butter cool slightly before adding it to the cookie dough. If you add it while it is hot it could scramble the eggs slightly and cause a weird texture in the cookie dough.
Use a cookie scoop so that all of the cookies are the same size. This step helps the cookies bake evenly and it will help them keep a nice round shape.
Don't forget the iconic fork criss cross on top of the cookies. This seems super basic but it helps the cookies bake evenly. It also allows people with peanut allergies to know that they are peanut butter.
Don't over bake the cookies. Being able to tell when a peanut butter cookie is done can be a bit tricky. Normally we wait until the edges are starting to brown slightly but peanut butter cookies are light brown. So bake for no longer than 10 minutes.