In partnership with McCormick, I’m excited to share a colorful, fun cupcake idea that’s perfect for spring brunches and celebrations.
These olive oil cupcakes topped with a rainbow mascarpone buttercream are playful, lightly sweet and surprisingly simple to make—no mixer required for the cake. The tender, mild crumb from the olive oil pairs beautifully with a fluffy mascarpone-based frosting that isn’t overly sweet, so every bite feels balanced.
Swirling frosting into vibrant, multi-colored rainbows instantly elevates ordinary cupcakes into something whimsical. Inspired by the mermaid and tie-dye trends, I experimented with soft, natural hues and created a rainbow swirl that’s cheerful without being garish. If you love neon or pastel tie-dye looks, this is a great way to bring that vibe to desserts.
For the colors, I used McCormick Color from Nature Food Colors, which are powdered natural colors made from beet, spirulina and turmeric. They mix easily into frosting and the box offers mixing suggestions to achieve shades like lavender and mint. Since I’ve been using fewer synthetic dyes, these natural powders were perfect for getting bright, clean colors without artificial ingredients.
The cake itself is light and tender, milder than a traditional vanilla cupcake, which makes it a great canvas for the mascarpone buttercream. I often find plain buttercream too rich to enjoy by itself, but the tangy, creamy mascarpone cuts through the sweetness so you can enjoy both cake and frosting together.
I arranged the frosting into rainbow layers and gently swirled them to create a tie-dye effect—soft coral and purple-pink shades give the cupcakes a whimsical, unicorn-like look. They’re festive enough for Easter brunch but fun for birthdays, showers or any colorful gathering.
If you’re planning a brunch menu, these cupcakes pair nicely with spring breakfast dishes. I’ve been testing a variety of brunch recipes and love options like carrot cake waffles, lemon blueberry baked casseroles and sheet-pan baked eggs with sweet potato hash as companions to these treats.
Olive Oil Cupcakes with Rainbow Mascarpone Buttercream
Pin Recipe
Leave a Review »
Ingredients
- 2 cups all-purpose flour
- 1 teaspoon baking soda
- 1 teaspoon baking powder
- 1/4 teaspoon salt
- 1/2 cup extra virgin olive oil
- 3/4 cup water
- 1/2 cup sugar
- 1 lemon, juiced
- 2 teaspoons vanilla extract
Mascarpone Buttercream
- 1 cup unsalted butter, at room temperature
- 3/4 cup mascarpone cheese, at room temperature
- 4 cups powdered sugar
- 2 teaspoons vanilla extract
- McCormick Color from Nature Food Colors (optional)
Instructions
-
Preheat the oven to 350 degrees F. Line a cupcake tin with liners.
-
In a bowl, whisk together the flour, baking soda, baking powder and salt. In a separate bowl, whisk together the water, olive oil, sugar, lemon juice and vanilla extract until combined. Add the wet ingredients to the dry and stir until just combined. Fill the liners about three-quarters full and bake 16 to 18 minutes, until the tops are lightly golden. Cool completely before frosting.
Mascarpone Buttercream
-
In the bowl of a mixer, beat the butter and mascarpone until creamy. Gradually add the powdered sugar a few spoonfuls at a time, then add the vanilla, scraping down the bowl as needed. Beat on medium-high for 4 to 5 minutes until fluffy.
-
Divide the frosting into jars or bowls based on how many colors you want. Mix the powdered natural food colors into each portion until you reach desired shades. For a rainbow swirl, add small dollops of each color to the top of the cupcake and gently swirl with a knife a few times. Serve once frosted.
Notes
Did you make this recipe?
Share a photo on social media and tag the creator if you like — I appreciate seeing your versions of these cupcakes!
If you love colorful treats and simple, elegant flavors, these olive oil cupcakes with rainbow mascarpone buttercream are a delightful addition to any celebration.