This low sodium yellow cake is moist and tender, thanks to a blend of butter, oil, and buttermilk. With no added salt and sodium-conscious ingredients, it’s ideal for kidney-friendly or heart-smart eating. The smooth, silky chocolate buttercream uses unsalted butter and semisweet chocolate for a luscious, low sodium finish. Perfect for birthdays, holidays, or casual desserts.
Ingredients Needed:
Cake:
- 2¼ cups all-purpose flour
- ¼ cup cornstarch
- 1¼ cups granulated sugar
- 2 tsp sodium-free baking powder
- ½ tsp salt: omit for low sodium
- ½ cup unsalted butter: room temperature
- ¼ cup vegetable oil
- 3 large eggs + 2 yolks: room temperature
- 1 Tbsp vanilla extract
- 1 cup buttermilk substitute: use unsweetened almond milk + 1 Tbsp lemon juice
Low Sodium Chocolate Buttercream:
- 1¼ cups unsalted butter: 1 cup room temp + ¼ cup melted
- ¼ cup unsweetened cocoa powder
- ½ tsp salt: omit or reduce
- ½ cup milk: use low sodium alternative
- 1 lb powdered sugar
- ⅓ cup semisweet chocolate chips
How To Make Low Sodium Yellow Cake:
Prep the Pans:
Preheat oven to 350°F. Butter and flour three 6-inch pans, or line with parchment.
Mix Dry Ingredients:
Whisk together flour, cornstarch, sodium-free baking powder. Omit the salt.
Cream Butter and Sugar:
Beat unsalted butter and sugar until light and fluffy. Add oil and vanilla. Mix well.
Add Eggs:
Add eggs and yolks one at a time, mixing between each addition.
Alternate Dry and Buttermilk:
Add dry ingredients and buttermilk in batches while mixing on low until smooth.
Bake:
Divide batter into pans and bake for 30 minutes or until centers are springy and a toothpick comes out clean. Cool completely.
Make the Frosting:
Melt ¼ cup butter and mix in cocoa powder. Melt chocolate chips with ¼ cup milk.
Beat 1 cup butter until creamy. Mix in cocoa mixture, then powdered sugar. Add cooled chocolate and drizzle in remaining milk. Mix until smooth.
Assemble:
Spread frosting between layers, then cover cake in remaining buttercream. Use spatula for a rustic swirl look.

Recipe Tips:
- Use unsalted butter and sodium-free baking powder to reduce sodium.
- Skip added salt for a kidney-friendly version.
- A buttermilk substitute using lemon juice and almond milk keeps it low sodium.
- Room temperature ingredients ensure better texture.
- Chocolate ganache adds rich flavor with less salt than cocoa alone.
How to Store & Reheat:
- Room Temperature: Safe up to 6 hours if unfrosted.
- Fridge: Store covered up to 5 days.
- Freezer: Wrap frosted or unfrosted layers and freeze up to 2 months.
Nutrition Facts (per serving, approx.):
- Calories: 670
- Sodium: 105 mg
- Protein: 5 g
- Fat: 38 g
- Carbs: 78 g
- Fibre: 1 g
- Sugar: 56 g
FAQs:
Can I make yellow cake low sodium?
Yes! Use unsalted butter, skip added salt, and choose sodium-free baking powder.
What’s a good buttermilk substitute for low sodium diets?
Mix 1 Tbsp lemon juice with 1 cup unsweetened almond milk. Let sit 5 minutes before using.
Can I use boxed cake mix for low sodium?
Most mixes are high in sodium. Homemade is the better heart-healthy option.
Can I freeze yellow cake?
Yes, freeze frosted or unfrosted layers for up to 2 months.
Does chocolate frosting have a lot of salt?
Store-bought does, but homemade versions with unsalted butter and no added salt are better for low sodium diets.
Try More Recipes:
Low Sodium Yellow Cake Recipe
Course: DessertCuisine: AmericanDifficulty: Easy12
servings15
minutes30
minutes670
kcalA moist, buttery yellow cake topped with chocolate buttercream, made with no added salt—perfect for a low sodium lifestyle.
Ingredients
- Cake:
2¼ cups all-purpose flour
¼ cup cornstarch
1¼ cups granulated sugar
2 tsp sodium-free baking powder
½ cup unsalted butter
¼ cup vegetable oil
3 eggs + 2 yolks
1 Tbsp vanilla extract
1 cup almond milk + 1 Tbsp lemon juice
- Frosting:
1¼ cups unsalted butter
¼ cup cocoa powder
½ cup milk (low sodium)
1 lb powdered sugar
⅓ cup semisweet chocolate chips
Directions
- Preheat oven to 350°F. Prep three 6-inch pans.
- Mix flour, cornstarch, baking powder. Omit salt.
- Cream butter and sugar. Add oil and vanilla.
- Add eggs one at a time.
- Alternate flour mix and buttermilk.
- Bake 30 mins. Cool completely.
- Make frosting. Mix cocoa, chocolate, and sugar into butter.
- Assemble and frost cake.
