Under the Sea Themed Party Snack Idea for Kids

This Cookie Crab and Mini Pound Cake Treasure Chest is an adorable snack or dessert idea for ocean or sea parties with kids.  The perfect easy-to-make dessert for an Under the Sea Party Snack Idea, Arial birthday, Spongebob birthday, Beach Themed, Summer, or Pirate birthday. Easy to make and so cute.

Oreo crab cookie and treasure chest

Under the Sea Party Treat Idea

Food Crafts are a great way to add a special element to any celebration or party. These Ice cream and graham cracker ocean treat , Beach Jell-O Treat, or Flip-Flop Shaped Rice Krispies Treats  would be a great addition to any ocean-themed or summer party.

crab cupcake topper and pound cake treasure chest

Are you ready to make this cute Ocean Snack? Let’s make sure that you have everything you need…

Crab –

Ingredients  

  • Oreo double stuffed cookies – I used vanilla, but you could easily use the chocolate – 1 per crab
  • red frosting

For each crab…

  • Four toothpicks
  • Two red gummy lifesavers
  • Two mini marshmallows
  • Two mini chocolate chips

Treasure Chest –

  • Mini Pound cake – Find these in the bread aisle. 6 typically come in one box
    Frosting tube – I used blue
    Writing tip for frosting1
    M&M – I used blue to match my frosting
    optional – mini pearls to sprinkle around the treasure chest, candy coins, star-shaped sprinkles

Sand: 

  • Crushed vanilla wafers – about 4 per dessert

Instructions

making a cookie crab

For the Crab:

  • spread read frosting on one side of the cookie
  • twist the cookie apart
making crab and treasure chest treats

Claws:

  • Cut aV out of 2 red lifesaver gummies
  • Insert one toothpick into each gummy – now, you have claws
  • push the toothpicks into the sides of the creamy center of the cookie, pointing up and out for crab claws

Eyes:

  • spread a little vanilla frosting onto the end of a mini marshmallow
  • attach a mini chocolate chip
  • insert a toothpick into the bottom of each marshmallow eye
  • push the toothpicks into the creamy center of the cookie so they are pointing up
  • spread vanilla frosting over the creamy center
making a crab from a cookie
  • gently push the red frosted top back onto the cookie

Treasure Chest:

making treasure chest cake
  • With your blue frosting and writing tip, squeeze two lines – one for each end of the pound cake coming all the way across the top and front of the cake
  • Dab some frosting onto the back of an M&M
  • push the M&M onto the front center, between the two blue lines

Sand:

  • Crushed Vanilla Wafers

Putting it together:

  • Pour the crushed vanilla wafer onto the serving plate
  • add the treasure chest to the wafer sand
  • carefully place your crab beside the treasure chest – use the chest as a prop if the crab tries to topple over
  • REPEAT for each treat

FAQs

Do I have to use Double Stuffed Oreo Cookies for the Crab?

It is a good idea to use a double-stuffed cookie so the crab toothpick arms will fit easily in between the cookie halves.

Make Ahead and Storage

These can be made several hours before and left out at room temperature.

To make them a day in advance

  • Carefully, so the crab doesn’t tip over, place it in an airtight container and store it at room temperature for up to one day before your party.

Recipe

crab cookie and treasure chest cake

Under the Sea Themed Dessert Idea

A cute ocean, sea, or summer birthday party treat for kids.
5 from 1 vote
Print Pin Rate
Course: Snack
Cuisine: American
Prep Time: 15 minutes
Cook Time: 0 minutes
Servings: 1 servings
Calories: 324cal
Author: Melissa
Cost: $10

Equipment

  • 4 toothpicks per crab
  • writing tip for frosting

Ingredients

Crab (This recipe will be for 1 cake and one crab) Multiply times the number of desserts you will need

  • 1 Oreo double stuffed cookie – I used vanilla but you could easily use the chocolate – 1 per crab
  • 1 oz. red frosting

For each crab…

  • 2 red gummy lifesavers
  • 2 mini marshmallows
  • 2 mini chocolate chips
  • 1 oz. vanilla frosting

Treasure Chest –

  • Mini Pound cake – Find these in the bread aisle. 6 typically come in one box
  • 1 oz. Frosting tube – I used blue
  • 1 M&M – I used blue to match my frosting

More Decorations

  • mini pearls to sprinkle around the treasure chest
  • candy coins
  • star-shaped sprinkles

Sand: 

  • 4 Crushed vanilla wafers

Instructions

For the Crab:

  • spread read frosting on one side of the cookie
  • twist the cookie apart

Claws:

  • cut a V out of 2 red life saver gummies
  • insert 1 toothpick into each gummy – now, you have claws
  • push the toothpicks into the sides of the creamy center of the cookie pointing up and out for crab claws

Eyes:

  • spread a little vanilla frosting onto the end of a mini marshmallow
  • attach a mini chocolate chip
  • insert a toothpick into the bottom of each marshmallow eye
  • push the toothpicks into the creamy center of the cookie so they are pointing up
  • spread vanilla frosting over the creamy center
  • gently push the red frosted top back onto the cookie

Treasure Chest:

  • with your blue frosting and writing tip, squeeze 2 lines – one for each end of the pound cake coming all the way across the top and front of the cake
  • dab some frosting onto the back of an M&M
  • push the M&M onto the front center, between the 2 blue lines

Putting it together:

  • pour the crushed vanilla wafer onto the serving plate
  • add the treasure chest to the wafer sand
  • carefully place your crab beside the treasure chest – use the chest as a prop if the crab tries to topple over
  • REPEAT for each treat

Notes

Storing:
  • These can be made several hours before and left out at room temperature.
To make them a day in advance
  • Carefully, so the crab doesn’t tip over, place it in an airtight container and store it at room temperature for up to one day before your party
nutrition facts are only an estimate 

Nutrition

Calories: 324cal | Carbohydrates: 106g | Protein: 4g | Fat: 22g | Saturated Fat: 5g | Polyunsaturated Fat: 9g | Monounsaturated Fat: 6g | Trans Fat: 0.1g | Cholesterol: 1mg | Sodium: 314mg | Potassium: 60mg | Fiber: 1g | Sugar: 80g | Vitamin A: 16IU | Vitamin C: 0.04mg | Calcium: 14mg | Iron: 1mg

~Melissa – KidFriendlyThingsToDo.Com

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