Cuban sweet potato and calabaza squash baked in a tangy tamarind-tomato glaze until caramelized at the edges.
Boniato (Cuban sweet potato) and calabaza (Caribbean squash) are everyday root vegetables in Cuban kitchens, usually boiled or fried simply with salt and lime. This baked version glazes them in a tamarind-tomato sauce, a tangier take that draws on the same sweet-and-sour instincts found in Cuban and broader Caribbean sauces, where tamarind occasionally shows up to cut the sweetness of root vegetables and add real depth. Cutting the boniato and calabaza into even pieces is the most important step — they cook at different rates depending on size, and boniato in particular can turn gluey if boiled too long, so roasting is the better method here for keeping distinct texture. The tamarind-tomato glaze is brushed on partway through roasting rather than at the start, so it caramelizes rather than burns over the vegetables' long cook time. This makes a satisfying vegetarian side or light main, especially alongside black beans and rice — sweet, tangy and substantial enough to anchor a plate on its own.
Serves 4
Preheat oven to 210°C (410°F). Toss boniato and calabaza chunks with olive oil, half the salt and cumin on a large baking sheet, spreading them in a single layer.
Roast for 20 minutes, flipping once halfway, until the pieces are just starting to soften and color at the edges.
While vegetables roast, whisk together tomato paste, tamarind concentrate, brown sugar, garlic, lime juice and remaining salt in a small bowl until smooth.
Remove the baking sheet, brush or toss the vegetables generously with the tamarind-tomato glaze, and return to the oven.
Roast another 15-20 minutes until the vegetables are fork-tender and the glaze has caramelized at the edges, watching in the last 5 minutes so the sugar doesn't burn.
Adding the glaze halfway through, not at the start, is what lets it caramelize instead of scorching over the full cook time.
Scatter with cilantro and serve warm as a side or over rice as a light main.
Cut both vegetables to a similar size so they finish roasting together; boniato in larger chunks will need extra time compared to calabaza.
If you can't find calabaza, kabocha or butternut squash are close substitutes with a similar dense, sweet flesh.
Line the baking sheet with parchment before adding the glaze — the sugar in it can stick stubbornly to bare metal.
Add a pinch of cayenne to the glaze for a sweet-spicy version.
Skip the tamarind and use plain lime juice for a simpler, more traditional citrus-glazed boniato.
Toss in cubed plantain along with the root vegetables for extra sweetness and textural variety.
Refrigerate up to 4 days. Reheat in a 190°C oven for 10 minutes to re-crisp the edges rather than microwaving, which softens them.
Boniato and calabaza are foundational vegetables in Cuban home cooking, generally boiled or fried with garlic and lime; the tamarind-tomato glaze in this version draws on the broader Caribbean pantry's fondness for sweet-sour sauces rather than being a strictly traditional Cuban preparation.
Yes, though the texture will be creamier and sweeter than boniato's drier, chestnut-like flesh — reduce the brown sugar slightly to compensate.
A mix of 1 tablespoon lime juice and 1 teaspoon Worcestershire sauce gives a rough approximation of tamarind's sour-savory depth.
This usually means the oven wasn't hot enough or the pieces were too crowded on the pan, causing them to steam — use a single layer with space between pieces and a fully preheated 210°C oven.
Per serving (260g / 9.2 oz) · 4 servings total
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