Blue Poop Challenge Muffins Recipe
Introduction
These Blue Poop Challenge Muffins are a fun and colorful treat packed with fresh blueberries and a hint of lime zest. The striking blue color and sweet, tangy flavor make them perfect for a playful breakfast or snack.

Ingredients
- 2 cups (250g) all-purpose flour*
- 1 Tbsp (15g) baking powder
- 1/2 tsp salt
- 1/2 cup (120g) buttermilk
- 1 Tbsp lime zest
- 1 tsp vanilla extract
- 1 tsp Wilton Royal blue food coloring
- 1/2 cup (100g) vegetable oil
- 1/2 cup (100g) sugar
- 1/2 cup (100g) dark brown sugar
- 2 eggs, room temperature
- 1 pint fresh blueberries
- Coarse sugar (for topping)
Instructions
- Step 1: Preheat the oven to 350°F (175°C) and grease a 12-count muffin pan with non-stick spray. Set aside.
- Step 2: In a medium bowl, whisk together the flour, baking powder, and salt. Set aside.
- Step 3: In a small bowl, combine the buttermilk, lime zest, vanilla extract, and blue food coloring. Mix well and set aside.
- Step 4: In a large bowl, use an electric mixer to beat together the vegetable oil, sugar, and dark brown sugar until light and fluffy. Add the eggs one at a time, mixing just until incorporated.
- Step 5: Alternately add the flour mixture and the buttermilk mixture to the wet ingredients, mixing gently after each addition until just combined. Avoid overmixing.
- Step 6: Gently fold in the fresh blueberries, taking care not to break them.
- Step 7: Divide the batter evenly among the muffin cups, filling each about three-quarters full. Smooth the tops as needed.
- Step 8: Sprinkle coarse sugar on top of each muffin for a crunchy finish.
- Step 9: Bake for about 25 minutes, or until a toothpick inserted into the center of a muffin comes out clean.
- Step 10: Let the muffins cool in the pan for 10 minutes before transferring them to a wire rack to cool completely.
Tips & Variations
- Use fresh, ripe blueberries for the best flavor and texture; frozen can be used but may color the batter.
- If you prefer a natural blue color, try using butterfly pea powder instead of food coloring.
- For extra zest, add a teaspoon of lemon zest along with the lime zest.
- Swap the vegetable oil for melted coconut oil for a subtle tropical note.
Storage
Store the muffins in an airtight container at room temperature for up to 3 days. For longer storage, refrigerate up to 5 days or freeze for up to 2 months. Reheat briefly in the microwave or oven to enjoy them warm.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use frozen blueberries instead of fresh?
Yes, frozen blueberries can be used, but be aware they may release more juice and turn the batter purple instead of a vibrant blue. Gently fold them in without thawing to minimize color changes.
Is there a substitute for buttermilk?
You can make a buttermilk substitute by adding 1/2 tablespoon of lemon juice or white vinegar to 1/2 cup of milk. Let it sit for 5 minutes before using in the recipe.
PrintBlue Poop Challenge Muffins Recipe
Delightfully colorful and bursting with fresh blueberries, these Blue Poop Challenge Muffins combine the tang of lime zest and buttermilk with a vibrant blue hue. Perfectly moist and topped with a sprinkle of coarse sugar for a sweet crunch, they make a fun and tasty treat for breakfast or snack time.
- Prep Time: 15 minutes
- Cook Time: 25 minutes
- Total Time: 40 minutes
- Yield: 12 muffins 1x
- Category: Baking
- Method: Baking
- Cuisine: American
Ingredients
Dry Ingredients
- 2 cups (250g) all-purpose flour
- 1 Tbsp (15g) baking powder
- 1/2 tsp salt
Wet Ingredients
- 1/2 cup (120g) buttermilk
- 1 Tbsp lime zest
- 1 tsp vanilla extract
- 1 tsp Wilton Royal blue food coloring
- 1/2 cup (100g) vegetable oil
- 1/2 cup (100g) sugar
- 1/2 cup (100g) dark brown sugar
- 2 eggs, room temperature
Add-ins and Toppings
- 1 pint fresh blueberries
- Coarse sugar (for topping)
Instructions
- Preheat and prepare pan: Preheat your oven to 350°F (175°C) and grease a 12-count muffin pan with non-stick spray. Set aside to ensure easy removal of muffins later.
- Mix dry ingredients: In a medium bowl, whisk together the all-purpose flour, baking powder, and salt. This ensures even distribution of the leavening and seasoning.
- Combine wet ingredients: In a small bowl, mix the buttermilk, lime zest, vanilla extract, and blue food coloring. The lime zest adds a fresh zing, while the food coloring gives the muffins their signature blue tone.
- Cream sugars and oil, add eggs: In a large mixing bowl with an electric mixer, beat together the vegetable oil, sugar, and dark brown sugar until the mixture is light and fluffy. Add the eggs one at a time, beating just until incorporated to maintain moisture and structure.
- Combine mixtures: Alternately add the flour mixture and the buttermilk mixture to the wet ingredients in the large bowl, mixing gently and just until combined after each addition. Overmixing can lead to tough muffins.
- Fold in blueberries: Carefully fold in the fresh blueberries, taking care not to break them in the batter to avoid discoloration and maintain whole bursts of fruit.
- Fill muffin pan: Spoon the batter into the prepared muffin pan, filling each cup about three-quarters full. Smooth the tops gently for an even bake.
- Add coarse sugar topping: Sprinkle coarse sugar evenly over each muffin to create a crisp and sweet crust upon baking.
- Bake muffins: Place the muffin pan in the preheated oven and bake for about 25 minutes, or until a toothpick inserted in the center of a muffin comes out clean, indicating doneness.
- Cool and serve: Remove the pan from the oven and allow muffins to cool for 10 minutes before removing them from the pan to cool completely on a wire rack. This resting time helps the muffins set and prevents breakage.
Notes
- Room temperature eggs help create a better emulsion and fluffier texture.
- Be careful when folding in blueberries to prevent the batter from turning purple.
- Use fresh blueberries for the best flavor and texture; frozen may alter batter consistency.
- Coarse sugar on top adds a delightful crunch and visual appeal.
- To make buttermilk substitute, mix 1/2 cup milk with 1/2 tablespoon lemon juice or white vinegar and let sit for 5 minutes.
Keywords: blueberry muffins, blueberry lime muffins, colorful muffins, breakfast muffins, blueberry dessert

