A super easy cake made using vanilla cake mix with a few upgrades – this cake is swirled with strawberry jam throughout and topped with a simple glaze.

one bowl strawberry cake

So, I’m sitting here having a piece of this glorious strawberry cake for breakfast with my coffee this morning.

I’m not even sorry, because it’s Friday, and the weekend should really always be celebrated with cake anyway.  Right?

Even more to love and celebrate is that this cake is incredibly easy.  I love, love, love, taking boxed cake mix and making it into the very best cake it can possibly be.

easy strawberry cake

This is what I like to do for an ultimate-moist-decadent boxed cake.

  1.  Milk instead of water – It really “fluffs up” the cake
  2.  Extra eggs – makes the cake super moist, rich, creamy, bakery quality
  3.  Butter instead of oil – even more richness and brings out the flavor.
  4. For this cake – all that strawberry goodness you see swirled through is JAM!  Yes, strawberry jam dolloped on top and swirled into the cake.  Max flavor.  So good.

easy strawberry cake

This cake is a red and pink gem that’s perfect for Valentine’s Day.  I personally wish V-Day would hurry it up so I have a good excuse to make this cake again!

I don’t need flowers.  I do need cake.  Always.



**NOTE: This cake can be made in a 12 inch cast iron skillet, or a 9×13 inch baking dish.

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One Bowl Strawberry Swirl Cake

Servings 8


  • 1 Box White cake mix
  • 1 Cup Milk
  • 1/2 Cup Butter melted
  • 1/2 Cup Strawberry Jam
  • 1/2 Cup Sprinkles jimmies
  • For the Glaze
  • 1 Cup Powdered sugar
  • 1 Tablespoon Strawberry jam
  • 2 Tablespoons Milk
  • 1 Teaspoon Vanilla extract
  • Extra sprinkles for topping, as desired
  • 4 Large Eggs


  • Preheat oven to 350 degrees. Spray a large (12 inch) cast iron skillet (or 9x13 inch pan) with non-stick spray.
    In a large bowl, mix together the cake mix, milk, melted butter, and eggs until well combined. Stir in sprinkles
    Pour cake into skillet. Drop the strawberry jam by Tablespoon fulls onto prepared cake, and swirl through with a knife.
    Bake cake in preheated oven for 34-38 minutes.
    Allow cake to cool before frosting.
    Whisk together the powdered sugar, jam, vanilla, and milk until well combined. Add frosting to a ziploc bag, and cut about 1/4 inch off of the corner (or use a piping bag), and frost cake as desired.
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Hey! Nice to meet you! I'm Nichole!

Welcome to The Salty Marshmallow! I'm a mom, animal lover, photographer, & kitchen mess-maker. Here you will find the result of my decades-long passion for chasing the best flavors in the kitchen, all meant to be cooked by regular people with busy lives just like you and me.

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  1. Sounds yummy! How many eggs do you use? I don’t see them listed in ingredients.
    Also, can this be made in a 10-1/4″ skillet?

    1. Hi, Ruby! This recipe calls for 4 large eggs. You could try it in a 10 1/4″ skillet, but I have always used my 12″ inch so I can’t say exactly how it would turn out. If in doubt, I’d use a 9×13 inch pan if you don’t have a larger cast iron. I hope you enjoy this! 🙂