01 -
Wash and chop the rhubarb into even pieces. Roast the rhubarb at 400°F for 15–20 minutes until soft.
02 -
In a pan, heat olive oil and sauté the onions and garlic until golden and fragrant.
03 -
Combine roasted rhubarb, sautéed ingredients, tomato paste, sugar, and vinegar. Simmer until well blended.
04 -
Use a blender to puree the sauce for a smooth texture. Taste-test and adjust sweetness and seasoning.