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Kumquat Upside Down Cake #SpringSweetsWeek

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If you want to be surprised by a dessert, make plans to make this Kumquat Upside Down Cake this week. This is quickly becoming a favorite dessert here.

This post is sponsored in conjunction with #SpringSweetsWeek. I received product samples from sponsor companies to help in the creation of the #SpringSweetsWeek recipes. All opinions are mine alone.

Welcome to #SpringSweetsWeek 2021 hosted by Heather from Hezzi-D's Books and Cooks!   With the weather warming up and flowers beginning to bloom let's celebrate with spring sweets and a fun giveaway!   

This year 24 food bloggers from around the country are sharing over 100 sweet recipes that are perfect for the spring season.  So say goodbye to the snow and cold and get ready to enjoy the best spring treats like cupcakes, cookies, pies, dessert boards, and even a few beverages! 

Our #SpringSweetsWeek sponsors are helping us give away some great prizes.  Thank you to Dixie Crystals, Melissa's Produce, Door County Coffee, Circulon, Taylor and Colledge, and Nairn's for your generosity. 

We have an incredible giveaway with six amazing prizes and would love if you would take a moment to read about it and the prizes that you can win!

Alright y'all! let's talk about the third recipe I am sharing with you for Spring Sweets Week.

When I decided to make a Kumquat Upside Down Cake, I had no idea what this was going to taste like. I have never baked or cooked anything involving Kumquat, so when I got my box of produce from Melissa's produce and saw there was a bag of Kumquats, I knew I was going to find something fun to make for y'all.

I cracked one open right away so that I could taste it and they are VERY sour — like a mix between a lime, lemon, and an orange.

But, when you mix these little beauties with some sugar, you get an explosion of delicious dessert flavor in your mouth.

How to Make a Kumquat Upside Down Cake

Start by slicing up all of your kumquats. You are going to want about 2 cups of whole kumquats, and then slice them about 1/4″ thick. Be sure to remove all the seeds from the slices.

Now, melt your butter in your 8×8 baking dish and then sprinkle on the brown sugar.

Take the kumquat slices and place in the bottom of the pan in a single layer.

Then, make your cake batter. I love making homemade cakes — to me, they taste so much better than store bought. However, if you do use a boxed cake mix, you can totally make a boxed cake taste like a bakery cake using these tips.

I always make sure to flavor my cakes with extract and for this one, I am using a Vanilla bean paste from Taylor & Colledge.

Once the batter gets all mixed up, pour it right over the kumquats and smooth out and then leave it alone!

When you take the cake out of the oven, let it rest for about 15 minutes. Place a plate on top of your pan and invert it so the cake falls out onto the plate.

It should slide right out and everything stay intact.

The bright citrus flavor of those kumquats really makes this delicious upside-down cake tastes amazing and just really reminds me of Spring.

Wednesday #SpringSweetsWeek Recipes

We share recipes from #SpringSweetsWeek on Pinterest! Make sure you follow the board to see all the delicious recipes shared this week.

Check out the amazing prizes you can win in our #SpringSweetsWeek Giveaway!

Door County Coffee & Tea Co. is giving away one $50 gift certificate to so that one lucky reader can try any of their amazing coffees and teas.

Door County Coffee & Tea Co. was founded in 1993 in Door County, Wisconsin. It is a small, family-owned business, roasting coffee the old-fashioned way – in small batches to exacting specifications. The mission has always been to produce some of the best-tasting and highest quality coffee. They have over 100 types of coffee, all of which are roasted right on site. Visit to see their selection of coffees and teas as well as to find some fabulous recipes.

Dixie Crystals is giving away one propane kitchen torch which is ideal for caramelizing creme brulee or roasting peppers in a snap!

Since 1917, Dixie Crystals® has been the South’s choice for high-quality sugar and sweeteners. Our pure cane sugar products are all natural, non-GMO and provide consistently delicious results. Visit for hundreds of recipes, holiday ideas, and plenty of baking videos.

a Rafflecopter giveaway

Thank you #SpringSweetsWeek Sponsors: Dixie Crystals, Door County Coffee & Tea Co., Circulon, Melissa’s Produce, Taylor and Colledge, and Nairn’s for providing the prizes free of charge. These companies also provided the bloggers with samples and product to use for #SpringSweetsWeek recipes. All opinions are my own. The #SpringSweetsWeek giveaway is open to residents of the United States who are 18 years of age or older. All entries for the winner will be checked and verified. By entering you give the right to use your name and likeness. The number of entries received determines the odds of winning. Six (6) winners will be selected. The prize packages will be sent directly from the giveaway sponsors. The #SpringSweetsWeek Bloggers are not responsible for the fulfillment or delivery of the prize packages. Bloggers hosting this giveaway and their immediate family members in their household cannot enter or win the giveaway. No purchase necessary. Void where prohibited by law. This promotion is in no way sponsored, endorsed or administered by, or associated with Facebook, Instagram, Pinterest, Twitter or any other social channel mentioned in the #SpringSweetsWeek posts or entry.

Yield: 8 servings

Kumquat Upside Down Cake

Kumquat Upside Down Cake

Delicious vanilla cake topped with caramelized tangy kumquats with a sweet sticky glaze.

Prep Time 30 minutes
Cook Time 40 minutes
Total Time 1 hour 10 minutes


  • 1 cup whole kumquats
  • 1 cup + 6 tbsp unsalted butter room temperature
  • 1/2 cup brown sugar
  • 1 1/2 cup all-purpose flour
  • 1 1/2 tsp baking powder
  • 1/2 tsp salt
  • 1 cup white sugar
  • 1 egg
  • 1 tsp vanilla
  • 1 cup milk


  1. Preheat the oven to 350 degrees.
  2. Slice the kumquats into 1/4" slices. make sure to remove all the seeds.
  3. Melt 6 tablespoons of butter and place in the bottom of an 8x8 baking dish.
  4. Sprinkle the brown sugar on top of the butter.
  5. Arrange the kumquat slices in an even layer over the brown sugar. Push them as close together as you can.
  6. Whisk together the flour, baking powder, and salt in a small bowl and set aside.
  7. In a stand mixer or with a handheld mixer, beat together 1 cup of room temperature butter with the white sugar. beat until fluffy.
  8. Add the egg and vanilla to the butter and sugar mixture. Beat until well combined.
  9. Mix together the flour mixture and the butter mixture. beat on low until well combined.
  10. Pour the cake batter over the kumquat slices. Bake the cake for 40 minutes, or until a toothpick inserted in the center comes out clean.
  11. Once the cake finishes cooking, let it cool for 10-20 minutes.
  12. Place a plate or a pan on top of the 8x8 baking dish and flip the cake out onto the pan.
  13. The cake should drop easily from the cake pan and all the kumquats should be stuck to the bottom of the cake.
  14. You can dust it with powdered sugar if you want, or you can eat it as is.
  15. Enjoy!

Nutrition Information:



Serving Size:


Amount Per Serving: Calories: 348Total Fat: 10gSaturated Fat: 6gTrans Fat: 0gUnsaturated Fat: 4gCholesterol: 49mgSodium: 270mgCarbohydrates: 60gFiber: 2gSugar: 39gProtein: 5g

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Wednesday 14th of April 2021

Sounded delicious and I suck at baking so it seemed like an easy effort for me. The 1 cup of milk threw me though. I assumed it was supposed to go in after the butter and sugar were creamed but didn’t know so I went for it. Fingers crossed I didn’t blow it.

Inger@Art of Natural Living

Friday 26th of March 2021

I already loved kumquats but this cake is such a good use for them. Just like sunshine!


Thursday 25th of March 2021

What a fun way to use kumquats!

Jill Baird

Wednesday 24th of March 2021

I love, love, upside-down cakes and this one is one of the best! Thanks for the great recipe!

Dorothy Reinhold

Wednesday 24th of March 2021

My neighbor has a kumquat tree and I always reap the benefits. This will be the first treat I make!

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