This cookie is a thick, bakery-style double chocolate cookie packed with vibrant purple, blue, and pink chocolate chips. The dark cocoa base makes the colorful chips stand out, creating a dramatic “galaxy” look. The texture is soft and fudgy in the center with slightly crisp edges.
Perfect for eye-catching dessert tables, themed parties, or premium blog content.
Ingredients (Makes 12 large cookies)
For the Cookie Dough
- 1 cup (225g) unsalted butter, softened
- 3/4 cup (150g) brown sugar
- 1/2 cup (100g) granulated sugar
- 2 large eggs
- 2 teaspoons vanilla extract
- 2 cups (250g) all-purpose flour
- 1/2 cup (50g) unsweetened cocoa powder
- 1 teaspoon baking soda
- 1/2 teaspoon salt
- 1 tablespoon cornstarch (for extra softness)
Mix-ins
- 1 1/2 cups purple chocolate chips
- 1/2 cup blue or pink chocolate chips
- Optional: edible glitter or sanding sugar for sparkle
Equipment
- Mixing bowls
- Stand or hand mixer
- Baking tray
- Parchment paper
- Cooling rack
Instructions
1. Cream Butter and Sugars
Beat butter, brown sugar, and granulated sugar until light and fluffy (2–3 minutes).
2. Add Wet Ingredients
Mix in eggs one at a time. Add vanilla extract and combine.
3. Mix Dry Ingredients
In a separate bowl, whisk flour, cocoa powder, baking soda, salt, and cornstarch.
Gradually mix dry ingredients into wet mixture until just combined. Do not overmix.
4. Fold in Chocolate Chips
Reserve a small handful of colorful chips for topping.
Gently fold the remaining chips into the dough.
5. Chill
Refrigerate dough for at least 45 minutes.
This step ensures thick cookies and prevents spreading.
6. Shape
Preheat oven to 175°C (350°F).
Scoop large dough balls (about 3 tablespoons each) and place on lined baking sheet.
Press extra colorful chips on top for a bakery-style finish.
7. Bake
Bake for 11–13 minutes.
Edges should be set but centers slightly soft.
Let cookies cool on the tray for 5 minutes before transferring to a rack.
Professional Tips
- For thicker cookies, chill dough up to 2 hours.
- Slightly underbake for a fudgy center.
- If colored chips are unavailable, use white chocolate chips tinted with oil-based food coloring.
- Sprinkle edible glitter before baking for a cosmic effect.
Texture Profile
- Exterior: Slightly crisp
- Interior: Soft, chewy, and fudgy
- Visual: Dark chocolate base with vibrant purple and blue bursts
Storage
- Room temperature in airtight container: 4–5 days
- Freeze dough balls: Up to 2 months
- Freeze baked cookies: Up to 1 month

Galaxy Chocolate Chip Cookie (Purple & Cosmic Style)
Equipment
- mixing bowls
- stand or hand mixer
- baking tray
- parchment paper
- cooling rack
Ingredients
- 1 cup unsalted butter, softened (225g)
- 3/4 cup brown sugar (150g)
- 1/2 cup granulated sugar (100g)
- 2 large eggs
- 2 teaspoons vanilla extract
- 2 cups all-purpose flour (250g)
- 1/2 cup unsweetened cocoa powder (50g)
- 1 teaspoon baking soda
- 1/2 teaspoon salt
- 1 tablespoon cornstarch
- 1 1/2 cups purple chocolate chips
- 1/2 cup blue or pink chocolate chips
Instructions
- Beat butter, brown sugar, and granulated sugar until light and fluffy (2–3 minutes).
- Mix in eggs one at a time. Add vanilla extract and combine.
- In a separate bowl, whisk flour, cocoa powder, baking soda, salt, and cornstarch. Gradually mix dry ingredients into wet mixture until just combined. Do not overmix.
- Reserve a small handful of colorful chips for topping. Gently fold the remaining chips into the dough.
- Refrigerate dough for at least 45 minutes. This step ensures thick cookies and prevents spreading.
- Preheat oven to 175°C (350°F). Scoop large dough balls (about 3 tablespoons each) and place on lined baking sheet. Press extra colorful chips on top for a bakery-style finish.
- Bake for 11–13 minutes. Edges should be set but centers slightly soft. Let cookies cool on the tray for 5 minutes before transferring to a rack.

