According to them, the Earth is round… but these Flat Earth Sugar Cookies say otherwise. Perfect for a conspiracy‑theory party or any gathering with a sense of humor, these blue‑and‑green swirled sugar cookies are easy to make and guaranteed to spark debate at the snack table.

You can use this recipe or start with your favorite sugar cookie dough, add some color, and flatten those “facts” right onto a cookie sheet.
Table of Contents
Ingredients for Flat Earth Sugar Cookies
- White sugar
- Softened butter
- Large eggs
- Vanilla extract
- All-purpose flour
- Baking powder
- Salt
- Blue and green food coloring
How to Make Flat Earth Sugar Cookies (from scratch sugar cookie base)

In a large bowl, beat 1 cup white sugar and 3/4 cup softened butter with an electric mixer until smooth and creamy.
Add in 2 eggs and 1/2 teaspoon vanilla extract. Mix until fully combined.
Stir in 2 1/2 cups all-purpose flour, 1 teaspoons baking powder, and 1/2 teaspoon salt until a soft dough forms.
Preheat oven to 400°F. Lightly dust your counter or work surface with flour. Roll out dough to about ¼ to ½ inch thickness.
Divide dough into two equal parts. Add blue food coloring to one half, and green food coloring to the other. Knead each until color is evenly mixed.
Pinch small bits from both doughs, press together gently, and roll into a smooth ball with a blue-green swirl. Flatten slightly to form your “Flat Earth” discs.
Space the cookies apart on a cookie sheet lined in parchment paper.
Bake for 8-10 minutes, or until edges are just turning golden. Transfer to a wire rack and let cool completely before serving or decorating.
Tips & Suggestions
- Gel food coloring gives the most vibrant color without changing the dough texture.
- Don’t mix the colors too much. You want a distinct blue and distinct green color to look like an Earth.
- You can use this same recipe to make Earth Day Cookies on April 22nd!
FAQ
Can I freeze the cookie dough?
Yes! You can freeze this dough before or after shaping. Wrap tightly and store up to 2 months. Thaw in the fridge before baking.
Why chill the dough?
It helps the cookies keep their shape and improves the texture — less spreading and better structure for decorating.
Can kids help with these?
Absolutely! Coloring, swirling, and shaping the dough is a fun hands-on task for little hands — and the Flat Earth jokes are a bonus.nd adults laugh at).
More Conspiracy Theory Party Ideas
Having a conspiracy theory party? Check out all these ideas:
- How to Host a Conspiracy Theory Party
- Bermuda Triangle Punch
- How to make a Tin Foil Hat
- Illumi-Nachos
- Conspiracy Theory Power Point Ideas
- Mystery Meatballs
- Flat Earth Cookies
- Printable Conspiracy Theory Games
- Bigfoot Footprint Chocolate Ganache Butter
- Alien Egg OREO Truffles
- Printable Conspiracy Theory Puzzles
Flat Earth Sugar Cookies
Ingredients
- 1 cups white sugar
- 3/4 cups salted butter, softened
- 2 large eggs
- 1/2 teaspoon vanilla extract
- 2 1/2 cups all-purpose flour
- 1 teaspoons baking powder
- Blue and green food coloring (gel preferred)
Instructions
- In a large bowl, beat white sugar an softened butter with an electric mixer until smooth and creamy.
- Add in eggs and vanilla extract. Mix until fully combined.
- Stir in flour , and until a soft dough forms.Cover the dough and chill in the fridge for at least 1 hour, or overnight for best results.
- Preheat oven to 400°F (200°C). Lightly dust your counter or work surface with flour. Roll out dough to about ¼ to ½ inch thickness.
- Divide dough into two equal parts. Add blue food coloring to one half, and green food coloring to the other. Knead each until color is evenly mixed.
- Pinch small bits from both doughs, press together gently, and roll into a smooth ball with a blue-green swirl. Flatten slightly to form your “Flat Earth” discs.
- Place cookies inches apart on a cookie sheet lined with parchment paper.
- Bake for 8-10 minutes, or until edges are just turning golden. Transfer to a wire rack and let cool completely before serving or decorating.
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