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1
2 to 12 hours before baking: In a medium bowl, whisk chickpea flour, salt, and pepper together.
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2
Continue to whisk while pouring in the water (all of it), then whisk in 3 1/2 tablespoons olive oil.
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3
Cover and let stand at room temperature.
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4
To make the pesto, fill a medium mixing bowl with ice water and bring a medium pot of water to a boil.
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5
Add spinach and cook 30 seconds to a minute on high (even if the water doesnt return to a boil).
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6
Remove to the ice water for a couple minutes.
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7
Scoop spinach out and squeeze in your hands to remove as much water as possible.
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8
In a food processor, pulse the drained spinach, parsley, pine nuts, hemp seeds, lemon juice, and garlic until roughly chopped.
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9
With the processor running, drizzle in the olive oil until the mixture forms a smooth, thick paste, stopping to scrape down the sides of the processor once or twice.
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10
Pulse or stir in salt and pepper to taste.
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11
Preheat the oven to 425 degrees F with rack in middle position.
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12
Heat olive oil in a 10-inch cast iron skillet or oven safe nonstick skillet over medium high heat.
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13
Add leeks and dried basil and cook until tender and beginning to brown, 810 minutes.
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14
Add tomatoes, honey, and a pinch of salt, stir, and simmer until slightly thickened and most of the liquid has reduced, about 3 minutes.
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15
Stir in capers plus salt and pepper to taste.
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16
Cool in a bowl 510 minutes, then gently stir in feta and fresh basil, if using.
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17
Wipe out the skillet with a damp cloth then place in preheated oven for 10 minutes.
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18
Give the chickpea batter a stir.
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19
Working carefully with the hot pan (the oil and batter will sizzle when added), remove it from the oven and coat with remaining 1 1/2 tablespoons olive oil (a basting brush works well).
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20
Pour in chickpea batter and return pan to the oven.
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21
Bake about 25 minutes, until set in the middle and lightly browned on top.
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22
Cool slightly.
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23
To serve, top the whole pie or individual slices with pesto and tomato leek sauce.
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24
If making ahead, serve at room temperature or gently warmed.
