Step 1

Preheat oven to 450 degrees and line a baking sheet with parchment paper.

Step 2

Slice the peeled cucumber into spears and the onion into medium size chunks and place on lined baking sheet.

Step 3

Top cucumbers and onions with olive oil, cumin and 1/4 teaspoon of salt and bake on the upper middle rack for 15-20 minutes. You want the onions and cucumber to char slightly.

Step 4

Remove from oven and let cool until you can touch, then add to the blender with the remaining salt, lime juice, cilantro, oregano, garlic and water.

Step 5

Blend until smooth, about 20-30 seconds.