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Home » Recipe Index » Rhubarb Butter: Luscious Summer Spread for Toast

Rhubarb Butter: Luscious Summer Spread for Toast

April 26, 2026 by MiaBreakfast

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Imagine spreading a luscious layer of Rhubarb Butter on warm, freshly toasted bread, where the sweet-tart tang dances playfully on your palate. The vibrant pink hue and enticing aroma wrap around you like a cozy blanket, instantly transporting you to sunlit mornings filled with laughter and joy.

This delightful spread is more than just a treat; it’s a nostalgic reminder of summer afternoons spent in Grandma’s kitchen, where every spoonful brings back memories of love and warmth. Whether dolloped on fluffy biscuits or swirled into pastries, Rhubarb Butter is the perfect companion for brunch gatherings or lazy weekend breakfasts, promising a burst of flavor that will leave everyone craving more.

Why Is Rhubarb Butter So Irresistibly Good?

Sweet and tangy flavors meld beautifully, thanks to the fresh rhubarb and a touch of sugar. Zesty lemon juice enhances the taste, making every bite refreshing. Cinnamon adds a warm spice that elevates this spread to a new level. Versatile usage means it’s perfect on toast, biscuits, or even pastries! Plus, with just 30 minutes of cooking time, you’ll have a delightful homemade treat that impresses everyone.

Rhubarb Butter Ingredients

  • For the Rhubarb Base
  • 4 cups chopped rhubarb (fresh or frozen) – This tart fruit forms the delightful base of your Rhubarb Butter, offering a unique flavor profile.
  • 1 cup sugar (adjust to taste) – Sweetens the spread; feel free to adjust based on your preference for sweetness.
  • 1 tablespoon lemon juice (freshly squeezed) – Adds brightness and enhances the natural flavors of the rhubarb.
  • 1/2 teaspoon cinnamon (optional) – A warm spice that complements the tangy rhubarb beautifully if you choose to include it.
  • For the Butter Addition
  • 1/2 cup unsalted butter (softened) – Ensures a creamy texture in your Rhubarb Butter, making it perfect for spreading on toast or biscuits.

How to Make Rhubarb Butter

1. Combine Ingredients: In a saucepan, mix 4 cups of chopped rhubarb (fresh or frozen), 1 cup of sugar (feel free to adjust for sweetness), 1 tablespoon of freshly squeezed lemon juice, and optional 1/2 teaspoon of cinnamon. Cook over medium heat until the rhubarb breaks down, about 20-30 minutes, creating a fragrant, thick mixture.

2. Blend Smoothly: Once the mixture is cooked and slightly cooled, blend it until smooth. This will ensure your Rhubarb Butter has a delightful texture. Return it to the saucepan and stir in 1/2 cup of softened unsalted butter until fully incorporated, creating a creamy finish.

3. Store Safely: Transfer the luscious rhubarb butter into a clean jar and allow it to cool completely before sealing. Store it in the refrigerator for up to 2 weeks, ready to spread on toast or biscuits!

Optional: Serve with a sprinkle of cinnamon for an extra touch of warmth.

Exact quantities are listed in the recipe card below.

Tips for the Best Rhubarb Butter

  • Sugar Adjustments: Taste the mixture as it cooks; if it’s too tart, add more sugar gradually until balanced.
  • Fresh vs. Frozen: Both fresh and frozen rhubarb work well, but ensure frozen rhubarb is thawed and drained to avoid excess liquid.
  • Cinnamon Consideration: If you enjoy warm spices, add cinnamon while cooking; however, be cautious not to overpower the rhubarb’s natural flavor.
  • Blending Technique: Allow the mixture to cool slightly before blending to prevent splattering. A smooth consistency is key to a delightful spread!
  • Storage Tips: Use a clean, dry jar to store your rhubarb butter. This helps maintain freshness and prevents spoilage in the fridge.

How to Store and Freeze Rhubarb Butter

  • Fridge: Store your Rhubarb Butter in an airtight container for up to 2 weeks. This keeps it fresh and ready for your morning toast or pastries.
  • Freezer: For longer storage, freeze Rhubarb Butter in small portions using freezer-safe containers. It can last up to 6 months, preserving that sweet-tart flavor.
  • Thawing: When you’re ready to enjoy, thaw the frozen butter in the fridge overnight or on the counter for a few hours.
  • Reheating: If you prefer it warm, gently reheat on the stove over low heat while stirring until it’s smooth and spreadable.

Rhubarb Butter Your Way

Feel free to get creative and elevate your spread with these delightful twists and swaps.

  • Honey Sweetened: Swap out sugar for honey, adjusting to taste. This adds a floral sweetness that beautifully complements the tang of rhubarb.
  • Spicy Kick: Add 1/4 teaspoon of cayenne pepper or ginger for a surprising warmth. The heat will dance on your palate, making each bite unforgettable.
  • Herbal Infusion: Stir in 1 tablespoon of fresh chopped mint or basil after cooking. These fresh herbs will brighten the flavor profile, providing a refreshing twist.
  • Nutty Delight: Mix in 1/4 cup of finely chopped walnuts or pecans for added texture and richness. This crunchy element will contrast perfectly with the smoothness of the butter.
  • Berry Boost: Incorporate 1 cup of mashed strawberries or blueberries into the rhubarb base. This fruity addition enhances sweetness while creating a vibrant color.
  • Citrus Zing: Add the zest of one orange or lime along with the lemon juice. The citrus zing elevates the flavor, bringing brightness to every spoonful.
  • Vanilla Dreams: Blend in 1 teaspoon of pure vanilla extract after cooking. This subtle warmth works wonders to round out the sweet-tart experience.
  • Maple Twist: Replace sugar with maple syrup for a rich, earthy sweetness that pairs beautifully with rhubarb’s tanginess. Each taste will evoke cozy autumn memories.

Make Ahead Options

Preparing Rhubarb Butter is a fantastic way to save time and enjoy this sweet and tangy spread whenever the mood strikes! You can easily make the rhubarb base ahead of time by combining 4 cups of chopped rhubarb, 1 cup of sugar, 1 tablespoon of freshly squeezed lemon juice, and 1/2 teaspoon of optional cinnamon in a saucepan. Cook over medium heat until the mixture thickens, which takes about 20-30 minutes. Allow it to cool slightly, then blend until smooth before stirring in 1/2 cup of softened unsalted butter. Once prepared, transfer the rhubarb butter to a clean jar and let it cool completely before sealing. It can be stored in the refrigerator for up to 2 weeks. For serving, simply take it out of the fridge and allow it to warm slightly at room temperature for easy spreading. Enjoy the convenience of having this delightful treat ready at your fingertips!

Rhubarb Butter Questions Answered

Can I use frozen rhubarb for this recipe?

Absolutely! Frozen rhubarb works wonderfully in this recipe. Just make sure to thaw it completely and drain any excess liquid before chopping. This way, your rhubarb butter will maintain the perfect texture and flavor.

How can I adjust the sweetness of my rhubarb butter?

The beauty of this recipe is its flexibility! Start with 1 cup of sugar, and after cooking the rhubarb mixture for about 20-30 minutes, taste it. If you’d like it sweeter, gradually add more sugar until you reach your desired sweetness. Remember, the tanginess of the rhubarb can really shine through!

What’s the best way to store rhubarb butter?

Once your delicious rhubarb butter has cooled completely, transfer it to a clean jar and seal it tightly. It can be stored in the refrigerator for up to 2 weeks. Just make sure to keep it covered to maintain its freshness!

Can I freeze rhubarb butter for later use?

Yes, you can freeze rhubarb butter! After it’s cooled, pour it into freezer-safe containers or jars, leaving some space at the top for expansion. It will keep well in the freezer for up to 3 months. When you’re ready to enjoy it again, simply thaw it in the refrigerator overnight.

What should I serve with rhubarb butter?

Rhubarb butter is incredibly versatile! Spread it on warm toast or flaky biscuits for breakfast, or use it as a delightful filling for pastries and tarts at dessert time. You could also swirl it into yogurt or oatmeal for an extra zing of flavor!

I found my rhubarb butter too runny; what should I do?

If your mixture turns out too runny after blending, don’t worry! Simply return it to the saucepan over medium heat and cook for an additional 5-10 minutes, stirring frequently until it thickens up to your liking. Keep an eye on it so that you achieve that luscious spreadable consistency!

Rhubarb Butter

A sweet and tangy spread made from cooked rhubarb, perfect for toast, biscuits, or as a filling for pastries.
Print Recipe Pin Recipe
Prep Time 10 minutes mins
Cook Time 30 minutes mins
Total Time 40 minutes mins
Servings: 4 servings
Course: Condiment, spread
Cuisine: American
Calories: 120
Ingredients Method Nutrition Notes

Ingredients
  

Rhubarb Base
  • 4 cups chopped rhubarb fresh or frozen
  • 1 cup sugar adjust to taste
  • 1 tablespoon lemon juice freshly squeezed
  • 1/2 teaspoon cinnamon optional
Butter Addition
  • 1/2 cup unsalted butter softened

Method
 

Prepare Rhubarb
  1. In a saucepan, combine the chopped rhubarb, sugar, lemon juice, and cinnamon. Cook over medium heat until the rhubarb breaks down and the mixture thickens, about 20-30 minutes.
Blend and Mix
  1. Remove from heat and let cool slightly. Blend the mixture until smooth. Return to the saucepan and stir in the softened butter until fully incorporated.
Store
  1. Transfer the rhubarb butter to a clean jar and let it cool completely before sealing. Store in the refrigerator for up to 2 weeks.

Nutrition

Serving: 1servingCalories: 120kcalCarbohydrates: 16gFat: 6gSaturated Fat: 4gMonounsaturated Fat: 2gCholesterol: 15mgSodium: 5mgPotassium: 80mgFiber: 1gSugar: 12gVitamin A: 300IUVitamin C: 5mgCalcium: 20mgIron: 0.3mg

Notes

Rhubarb butter can be enjoyed on toast, pancakes, or as a filling for pastries. Adjust the sugar according to the tartness of the rhubarb.

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Let us know how it was!
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