In a food processor combine almond flour, tapioca flour, salt and cold butter and pulse until the butter is broken down into pea-sized pieces.: The scent at this stage is faintly nutty and cold, and you should see small, uniform pea sized butter fragments coated in flour. This distribution is what creates flakiness as the butter melts during baking, so pulsing just enough is crucial. If you overprocess to a paste, the dough will lose its flaky texture and become dense. A common mistake is letting the processor run too long, which warms the butter; if that happens, chill the mixture briefly before proceeding.
Add in egg and honey and process until the dough comes together around the blade.: When the egg and honey are incorporated the dough will begin to clump and gather near the blade, forming a cohesive mass that still looks slightly shaggy. This binding step brings moisture and a touch of sweetness to the crust. Avoid adding extra liquid, because the dough should be firm yet pliable; if it seems crumbly, press it together with cold hands rather than adding water. Overworking at this point can warm the butter and affect texture.
Shape dough into a round disk, wrap tightly in plastic wrap and transfer to the refrigerator until cold, at least 2 hours or overnight.: Chilling is where the crust sets its structure and allows the fats to firm up, which promotes flakiness when baked. The disk will feel solid and easier to roll after chilling. Rushing this step often yields a sticky dough that tears while rolling; if pressed for time, a minimum two hour chill is necessary but overnight is best for flavor and ease.
Between two sheets of parchment or plastic wrap, or on a tapioca floured work surface, roll out dough to fit the size of a 9 inch pie tin, about a 12 inch circle. Removing one sheet of parchment and invert the pie dough into your tin. Crimp the edges as desired. Store the pie dough in the refrigerator while you make the filling.: Rolling between sheets helps keep the surface clean and prevents sticking while letting you achieve an even thickness. You want an even, thin circle so it bakes uniformly, and light dusting of tapioca prevents tearing. If the dough resists or cracks, let it sit a few minutes to relax, or patch gently with extra dough. A common issue is uneven thickness, which causes thin spots to brown faster; rotate while rolling for evenness.
Pre-heat the oven to 400°F. Line a sheet pan with parchment.: Inverting the dough helps preserve shape and prevents stretching that can cause shrinkage during baking, and crimping makes a neat finished rim. Refrigerating the assembled crust stabilizes it so it holds the filling without slumping. If the dough slides or wrinkles, press gently into place and chill longer; warm dough will slump and lose its edge definition.
Place half of the asparagus on the sheet pan. Cut the other half into 1” pieces and place on the roasting pan, along with sliced potatoes. Drizzle with 2 teaspoons olive oil, and 1/2 teaspoon salt and 1/4 teaspoon of black pepper and toss together. Spread out into an even layer. Roast in the oven for 10-15 minutes, flipping the potatoes halfway through until the veggies are just tender.: Preheating to the correct temperature ensures the oven is ready for roasting and that the crust will begin to set properly later on. The high heat helps the vegetables develop color quickly. If your oven runs hot or cool, use an oven thermometer to verify temperature because inconsistent heat can alter roast times. Avoid opening the oven repeatedly as it drops temperature and prolongs roasting.
Meanwhile, heat olive oil in a small skillet over medium-high heat. Add in onion, leek, swiss chard stems, and garlic and cook until beginning to soften, about 5-8 minutes. Add in swiss chard leaves and cook until wilted, about 1 minute. Let the veggies cool slightly, about 5 minutes.: As the vegetables roast you will smell a toasty sweetness as the potatoes begin to caramelize and the asparagus gives off a green, vegetal aroma. The potatoes should show golden edges and the asparagus pieces should be tender but not mushy. Crowding the pan traps steam and prevents browning, so keep a single layer; if you see steam gathering, separate into two pans. Overroasted asparagus becomes stringy and the potatoes can become dry, so check for gentle tenderness.
In a large bowl whisk together eggs, remaining salt and pepper, paprika and garlic powder.: Sautéing develops savory depth as the onion and leek turn translucent and the chard stems tenderize, releasing a faintly sweet aroma. The wilted leaves will darken and collapse, concentrating flavor while retaining bright color. Letting the mixture cool prevents the hot vegetables from cooking the eggs prematurely when combined. A common error is rushing the saute so the onion remains sharp; cook until gentle aromatic sweetness emerges.
Transfer pie plate from the fridge and place it on a rimmed baking sheet. Add slightly cooled swiss chard mixture, roasted potatoes and 1” asparagus pieces into the prepared pie dough. Pour the egg mixture over the veggies and place the full asparagus stems decoratively over the top, slightly pushing them into the egg mixture. Sprinkle the chives over the top.: The eggs should be whisked until uniformly colored and slightly aerated, which creates a lighter custard. Spices blended in at this stage ensure even seasoning throughout the custard matrix. Whisking too vigorously can introduce too much air, causing an overly puffy quiche that may collapse; a steady whisk until combined is ideal.
Bake in the lower part of the oven for 40-50 minutes, or until the eggs are fully set and puffed up throughout. Cover the crust if browning too much.: When you assemble, the contrast of warm roasted vegetables and chilled crust is comforting, and pouring the eggs slowly helps them fill gaps so there are no air pockets. Decorating with whole asparagus stems makes a pretty presentation and helps indicate doneness visually as the custard puffs. If the filling bubbles excessively when baking, it may indicate too much air was whisked in; tap the tray gently to release large bubbles before baking.
Let cool for about 10-15 minutes, before slicing and serving. Garnish with additional fresh chives if desired.: During baking you will notice the quiche rise and the center will look set but still have a slight wobble, which indicates perfect custard doneness. Edges should be golden and the asparagus tops slightly roasted. If the crust is browning too quickly, tent with foil to protect it while the center finishes. Underbaking leads to a runny center, while overbaking dries the custard, so monitor in the last 10 minutes.
Let cool for about 10-15 minutes, before slicing and serving. Garnish with additional fresh chives if desired: Cooling allows the custard to settle and makes slicing neater, and the aroma of warm eggs and roasted vegetables becomes more inviting. A short rest also prevents the slices from falling apart as you serve. Cutting too soon will cause the quiche to be floppy, so exercise patience for a clean slice.