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Mermaid Jello Cups Recipe

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This Mermaid Jello Cups Recipe is the perfect tasty treat! Excellent for anyone who loves yumminess and bright colors – all in one! Make these Different Dessert Recipes for a fun treat for the kids!

I think that these would also be great for watching The Little Mermaid movie or a fun birthday party treat as well! Also – baby shower goodness! So many options!

If you want a fun treat, everyone can enjoy it in a cup; this is the one for you! It’s fast, it’s simple, and it’s unique. What more could you want in a treat?

Mermaid Jello Cups Recipe

My boys are huge fans of Jello. They love how it looks and tastes and how much fun it is to eat. This is one of the best desserts because I don’t have to put much time and effort into it to make it a hit.

I let the magic of the Jello take over – and win the hearts and taste buds of all. Whenever I made this fun treat, people commented how adorable it was!

Since the flavor of the Jello is one of the show’s stars, it lets you have more fun with the display. Make it unique, and see what everyone thinks of it!

What is my Jello not setting up?

Jell-O is an all-time favorite dessert enjoyed by people worldwide. However, sometimes we may encounter a frustrating situation where our Jell-O refuses to set up.

There could be several reasons why this might be happening. One of the most common causes of unset Jell-O is the lack of proper cooling time.

When Jell-O is not given enough time to cool, it fails to set up appropriately.

Furthermore, using too much liquid, either water or fruit juice, can also contribute to preventing Jell-O from setting.

Therefore, keeping the quantity of liquid and water ratio in check is always advisable to achieve perfect consistency.

On the other hand, adding fresh fruits or other acidic ingredients to the Jell-O mixture can slow down the setting process since these components contain enzymes that break down the gelatin’s structure.

Alternatively, using expired or low-quality gelatin can also lead to unsuccessful Jell-O preparations.

With attention to these factors, achieving the perfect Jell-O consistency is well within reach.

Specialty Ingredients:

The following ingredients are affiliate links on Amazon because they may be a bit hard to find in your normal store.  I wanted you to be able to see exactly which things we are using.

Reminder, not all ingredients in the Under the Sea Jello Cups Recipe are linked above, just the ones that may be a bit difficult to find or that you might be unsure of what to look for

Shop My Kitchen:

The following items can be found in my kitchen here at Miller Manor. Simply click the image that interests you – yes, they do contain affiliate links.

Must Have Resources:

When making Blue Jello Mermaid Cups at home, you really need to have the following Amazon affiliate tools on hand.

Happy Birthday Banner (3D Gold Lettering) Mylar Foil Letters | Inflatable Party Decor and Event Decorations for Kids and Adults | Reusable, Ecofriendly FunNostalgia Table-Top Hot Air Popcorn Machine with Measuring Cap, 12 Cup, White/RedBoieo Gold Birthday Party Hats, 12 pcs AssortedFully Assembled Birthday Photo Booth Props. 30 Piece Box Set of Rose Gold and Pink Selfie Party Supplies and Decorations Kit with Real Glitter Cute Bday Designs for Women - Did we Mention no DIY?29 Pieces Birthday Photo Booth Props Kit Colorful Funny Kids Birthday Theme Table Centerpiece Craft Cutouts with Glue Point Dots and Wooden Dowel Sticks for Birthday Party Celebration DecorationsBirthday Photo Booth Props, 31 PCS Funny Photo Booth Kit, Black and Gold Birthday Party Props with Sticks, Selfie Props Birthday for Adult, 31-pieces22 Pcs Happy Birthday Photo Booth Props Funny DIY Creative Birthday Decor for Celebrating Birthday


Make it a Meal:

If you’re ready to meal plan, now is the time! It’s a great way to stop stressing over what to make for dinner!

Main Dish: Tropical Chicken Dinner Recipe

Vegetable Side: Asparagus Spirals

Starch Side: Garlic and Parmesan Steak Fries

Refreshing Drink: Orange Mocktail Recipe

Best Jello Recipes:

Once you make this Easy Jello Recipe, it’s fun to think about all the other ways to use it. From baking to snacking, you’ll love these delicious options!

These Delicious Unicorn Jello Dessert Cups are so much fun to make!

Everyone in the house will want more of this Be Still My Heart Jello Treats Recipe!

Jello Poke Cake is a fun and delicious treat!

These 4th of July Jello Cupcakes are perfect for the summer months!

You have to give this Poke Cake Recipe a try! It’s so fun to make!

Find out how simple it is to make these Easy Halloween Jello Jigglers!

I love how fun it is to make this list of Over 25 Low Fat Dessert Recipes!

What makes eating Jello so fun?

Gelatin-based desserts like Jello have been enjoyed for generations, and there is no denying that they bring excitement to any meal.

Jello’s texture and bright colors are just a few factors that make it a fun treat to consume.

Additionally, a level of playfulness is associated with Jello’s jiggly and wobbly consistency. This dessert is often served at celebrations, such as birthday parties, and its inclusion on the menu immediately adds festivity to the occasion.

Furthermore, the versatility of Jello allows for creative use in recipes and presentations, leading to a heightened level of anticipation and entertainment.

Simply put, Jello is a dessert that brings out the playful side in everyone, making it a timeless favorite in households worldwide.

More Fun Treats and Recipes:

Mermaid Jello Cups Recipe

Mermaid Jello Cups Recipe

Yield: 12 jello cups
Prep Time: 15 minutes
Additional Time: 2 hours
Total Time: 2 hours 15 minutes

This Mermaid Jello Cups Recipe is so fast and easy to make! So much fun to share!


  • Blue Raspberry Jell-O packet
  • 1 ½ cup boiling water and 1 ½ cup cold water
  • ⅓ cup nerds
  • Edible Mermaid Tails


  1. Boil 1 1/2 cups of water in a pot. While the water is boiling, add the jello packet to a mixing bowl.
  2. Add 1/2 tsp of nerds at the bottom of each Jello cup. This will look like rocks under the water.
  3. Once the water is boiling, pour it onto the jello packet contents. Mix until it is dissolved.
  4. Pour the cold water into the hot water and stir for 30 seconds.
  5. Pour the jello into each cup, filling 3/4 full.
  6. Put the cups in the fridge for at least 2 hours.
  7. Remove and make sure that the Jello is set. Put the mermaid tails and mini forks into the cup.
Nutrition Information:
Yield: 12 Serving Size: 1
Amount Per Serving: Calories: 0Total Fat: 0gSaturated Fat: 0gTrans Fat: 0gUnsaturated Fat: 0gCholesterol: 0mgSodium: 2mgCarbohydrates: 0gFiber: 0gSugar: 0gProtein: 0g

This data was provided and calculated by Nutritionix on 4/20/2023

Did you make this recipe?

Please leave a comment on the blog or share a photo on Pinterest

Will you be serving this Jello treat at a birthday party?

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Funtastic Friday Link Party | Simply Beautiful By Angela

Thursday 18th of May 2023

[…] Angela’s pick: Spring Lilac Simmer Pot from Our Tiny Nest Michele’s pick: Mermaid Jello Cups from 3Boys and a Dog Donna’s pick: Cherry Pie Cookies from Cincy Shopper […]

Esmé Slabbert

Thursday 11th of May 2023

Our daughter had a mermaid theme for her little one some years ago and also used something similar. Thank you for sharing your links with us.

Kelli Miller

Wednesday 25th of October 2023

I'm thrilled to hear that our Mermaid Jello Cups recipe brought back fond memories! Mermaid-themed parties are indeed enchanting. The excess ingredients in the recipe ensure a perfect mix and a generous serving. Keep reliving those magical moments with our creative recipes. Thank you for your support!

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