Mason Jar Rainbow Cake Recipe

Make rainbow cupcakes in a jar.   This rainbow cupcake recipe has a couple easy tricks to make these colorful mason jar rainbow cakes.

Wouldn’t it be fun to serve these Rainbow Cupcakes for a fun St Patrick’s Day dessert?  We made this rainbow in a jar St Patrick’s Day treat from a boxed cake mix to celebrate a day when we all wish to be Irish.   I have always had so much fun with St. Patricks Day, from giving my son green milk to sticking clovers in my girl’s hair.   I never wish to pass a chance to have some fun even if all the kids are grown.   And this Mason Jar Rainbow Cupcake looks like a rainbow in a jar, what fun right?

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What you need for mason jar rainbow cakes:

Ingredients:

• Box of White Cake Mix plus ingredients to make the cake
• Food Colors
• White Frosting

Equipment Needed

• Mixing Bowls
• 8- 8 ounce Mason jars
• 9 X 13 pan 
• Cake Tester, optional
• St Patricks Day Toppers
• St Patrick’s Day Sprinkle Mix

How to make rainbow cupcakes in a jar:

Instructions:

 

Other St Patrick’s Day Recipes and Fun:

• Leprechaun Poo with baggie Toppers
•  Over 25 of the best Patrick’s Day Food Ideas
•  Stained Glass Shamrock Cookies
•  DIY Shamrock Metal Bookmark

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Print Recipe

5 from 14 votes

Mason Jar Rainbow Cake Recipe

Make Mason Jar Rainbow Cupcakes that look like a rainbow in a jar. Our rainbow cupcake recipe show steps on how to make rainbow cake or mini mason jar cake.

Prep Time15 mins

Cook Time40 mins

Total Time55 mins

Course: Dessert

Cuisine: American, Irish

Keyword: Mason Jar Cupcakes, mason jar rainbow cake, Rainbow Cupcake recipe, rainbow cupcakes in a jar., Rainbow in a Jar

Servings: 8

Calories: 240kcal

Author: Evelyn

Equipment

• Non stick Baking Spray
• Mixing Bowls
• 8 8 oz Mason Jars
• 9 X 13 baking pan
• Cake Tester optional
• St Patricks Day Toppers optional
• Green Sprinkles shamrocks, clovers (optional)

Ingredients

• 1 box white cake mix plus ingredients to make cake
• food coloring several colors
• white frosting whipped

Instructions

• Spray the inside of the jars with a non stick baking spray and preheat the oven to 350 degrees F.
• Prepare the cake mix according to package directions.
• Divide the cake batter evenly into 5 separate bowls. (about 1/2 cup of batter in each bowl).
• Add different food colors to each of the bowls and mix well to achieve bright bold colors.
• Carefully drop blobs of the different colored batter into your prepared jars filling about halfway.
• Place jars in a 9 X 13 pan and fill with about 1/2 inch of water.
• Bake for 45-50 minutes until done. You can test for doneness by using a cake tester or long toothpick
• Remove from the oven and water bath and let cool.
• Once the cupcakes are cool, frost the tops and decorate with Cupcake Toppers or Sprinkles

Nutrition

Calories: 240kcal | Carbohydrates: 53g | Protein: 3g | Fat: 2g | Saturated Fat: 1g | Sodium: 448mg | Potassium: 40mg | Fiber: 1g | Sugar: 27g | Calcium: 142mg | Iron: 1mg