Brimstone Cookies

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Brimstone cookies are easy-to-make cake mix cookies that are a Halloween party hit. The striking contrast of red velvet cookies coated in black cocoa powder creates an eye-catching red and black crinkle cookie look.

Brimstone cookies made with red velvet cake mix and black cocoa powder served on a dark wooden board.

If you find these cookies fun, you’ll absolutely love my candy corn cake mix cookies and Halloween cake mix monster cookies! All three of these Halloween cake mix cookie recipes promise to be the stars of your spooky celebrations.

Red and black crinkle cookies on a wooden platter with one cookie broken in half to show red interior.

Making these cookies is a breeze. Whether you’re new to baking or a seasoned pro, the simplicity of the recipe guarantees success. So, gather your ingredients and let’s create some spooktacular memories!

Ingredients

This section includes ingredient notes and substitution options. Get all measurements, ingredients, and instructions in the printable recipe card at the end of this post.

Red velvet cake mix, black cocoa powder, 2 eggs, and vegetable oil.
  • Red Velvet Cake Mix – Feel free to use your preferred brand, and always check the expiration date for the freshest taste.
  • Eggs
  • Vegetable Oil
  • Black Cocoa Powder – While black cocoa powder is ideal for achieving the dark contrast with the red cookies, extra dark or regular cocoa powder can be used if necessary.

How to make Red Velvet Brimstone Cookies

This section shows you how to make the recipe with step-by-step photos and instructions. For the full printable recipe, see the recipe card below. 

4 image collage of red cookie dough being mixed with electric beaters, cookie dough scoop portioning the dough, the dough being rolled in cocoa powder, and the cookie dough balls on a baking sheet.

Step 1: Beat the cake mix, eggs, and oil together until well combined.

Step 2: Scoop dough out and roll it into a ball.

Step 3: Coat with black cocoa powder.

Step 4: Bake as directed in the recipe card below.

Storage

Store the cookies in an airtight container at room temperature for up to 5 days. For longer freshness, you can also freeze them in a single layer before transferring to a zip-top bag, where they’ll last up to 3 months.

Helpful tips

  • Use a cookie scoop: When rolling your dough into balls, try to ensure each one is of uniform size. This ensures even baking. Using a cookie scoop can help achieve consistently sized cookies.
  • Dealing with sticky dough: If the dough is too sticky to handle or roll into balls, chilling it in the refrigerator for 30 minutes should make it easier to work with. If needed you can also mix a bit of extra flour into the dough.
  • Don’t overbake: Cake mix cookies are best when they retain a slightly soft center after baking. It’s better to slightly under-bake than over-bake. They will continue to firm up as they cool on the baking sheet.
Red velvet cookies coated with black cocoa powder for a crinkle cookie effect. One cookie has a bite taken out of it to reveal the inside of the soft red velvet cake cookie.

Brimstone Cookies FAQ

What is brimstone?

Brimstone is an Old English term for sulfur. Literally meaning “burning stone,” the term has been associated with folklore and mythology, often linked to the imagery of fire and brimstone in depictions of the underworld. In the context of these cookies, “brimstone” is used more for its dramatic connotations, adding a touch of mystery and allure to the recipe, especially for events like Halloween. It doesn’t refer to an actual ingredient in the cookies.

What is black cocoa powder, and how does it differ from regular cocoa powder?

Black cocoa powder is an ultra-dutched cocoa powder that’s been processed to neutralize its acidity. It gives baked goods a very dark, almost black color and a milder chocolate taste compared to regular cocoa powder. It’s often used in “Oreo-style” cookies and is responsible for their distinctive dark appearance.

Can I use butter instead of vegetable oil in this recipe?

Yes, you can substitute melted butter for vegetable oil. However, the texture might be slightly different. Butter tends to make cookies more flavorful and slightly crispier on the edges, while vegetable oil gives a softer texture overall.

More Halloween Party Recipes

Recipe
Red velvet cookies coated with black cocoa powder for a crinkle cookie effect. One cookie has a bite taken out of it to reveal the inside of the soft red velvet cake cookie.
Recipe
5 from 1 vote

Brimstone Cookies

Author: Jaclyn
Prep: 10 minutes
Cook: 10 minutes
Total: 20 minutes
These eye-catching red and black Brimstone cookies are easy to make with just 4 ingredients and are the perfect treat for Halloween celebrations.

Ingredients
 

  • 15.25 ounce red velvet cake mix (1 box)
  • 2 large eggs
  • cup vegetable oil
  • ½ cup black cocoa powder

Instructions

  • Preheat the oven to 350°F. Line baking sheets with parchment paper or silicone liners and set aside. 
  • In a large bowl, beat to combine the cake mix, eggs, and vegetable oil.
  • Scoop 1 1/2 Tablespoons of dough and roll into balls.
  • Place each ball of dough individually in the black cocoa powder and coat as desired. Cover completely for a full crinkle cookie look or coat sections for more of a brimstone look.
  • Place each cocoa-coated dough ball at least 2" apart on the prepared cookie sheets.
  • Bake for 10-12 minutes. Allow the cookies to cool for about 5 minutes on the baking sheet before moving to a cooling rack to cool fully.

Nutrition

Calories: 136kcal | Carbohydrates: 17g | Protein: 2g | Fat: 8g | Saturated Fat: 2g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 2g | Trans Fat: 0.03g | Cholesterol: 16mg | Sodium: 185mg | Potassium: 110mg | Fiber: 1g | Sugar: 8g | Vitamin A: 24IU | Calcium: 38mg | Iron: 1mg
Red velvet cookies coated with black cocoa powder for a crinkle cookie effect. One cookie has a bite taken out of it to reveal the inside of the soft red velvet cake cookie.

Did You Make This Recipe?

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5 from 1 vote (1 rating without comment)

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