Ingredients
Equipment
Method
Cook the rhubarb
- Combine chopped fresh rhubarb, sugar, and water in a large pot and bring to a boil. Stir to dissolve the sugar, then keep the boil going so the fruit starts breaking down.
- Reduce heat to a gentle simmer and cook uncovered for 25-30 minutes, stirring occasionally. Continue until the mixture is very thick with jammy consistency.
Blend and finish
- Use an immersion blender to puree the cooked rhubarb mixture until completely smooth. Blend thoroughly so there are no visible chunks or streaks.
- Stir in vanilla extract and cook for 5 minutes more if needed. Continue simmering until the butter reaches your desired thickness.
Jar and store
- Pour the hot rhubarb butter into clean jars and cool before refrigerating. Refrigerate for up to 3 weeks.
Notes
Pro tip: for the smoothest rhubarb butter, blend while the mixture is still hot and glossy; if it looks thin, continue simmering in 2-3 minute increments. Store in the refrigerator up to 3 weeks; freezing is not recommended because the texture can loosen after thawing. For a lower-sugar option, substitute a 1:1 sugar alternative designed for preserves (use according to package directions) to keep the thick set similar.
