Crispy Veggie Pizza with Quinoa Crust
A gluten-free pizza with a golden, sturdy crust made from blended soaked quinoa and a flax egg, topped with tomato sauce, melty mozzarella and roasted vegetables. No flour, no yeast, no rising.
- Prep
- 36 min
- Cook
- 40 min
- Wait
- 4 hr 5 min
- Total
- 5 hr 21 min
- Makes
- 1 pizza, 11-inch (28 cm) round (8 slices)
Steps
Before you start
- Start at least 4 hours ahead (or the night before): the quinoa must soak before blending. Soaking softens it so the batter turns smooth and the crust bakes up cohesive.
- Use ground flaxseed (flax meal), not whole seeds. Whole seeds will not gel.
- Pat the mushrooms and spinach dry. Wet toppings make the crust soggy.
- You need a large baking sheet and two sheets of parchment paper. Don't substitute foil or wax paper.
Soak the quinoa
- Place 1 cup (185 g) quinoa in a fine-mesh sieve and rinse under cold running water for 30 seconds, rubbing it with your fingers, to remove the bitter coating.
- Transfer to a bowl, cover with 2 cups (480 ml) cold water, and soak at room temperature for 4 to 8 hours.
- Drain thoroughly in the sieve, shaking out as much water as you can.
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Ready when: Grains look plump and slightly swollen, and one pressed between your fingers squashes easily
Tip: Soaking longer than 8 hours at room temperature can turn the quinoa sour; refrigerate if soaking overnight.
Make the flax egg
- In the last 10 minutes of soaking, stir 2 tbsp (14 g) ground flaxseed and 6 tbsp (90 ml) cold water together in a small bowl.
- Set aside.
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Ready when: The mixture is thick, gloopy and egg-white-like, and a spoon leaves a trail
Tip: If it hasn't thickened after 10 minutes, your flax may be old; stir it again and give it 5 more minutes.
Preheat and prep toppingsOven 425°F / 220°C
- Position a rack in the center of the oven and preheat to 425°F (220°C).
- Line a large baking sheet with parchment paper.
- Slice the bell pepper, mushrooms and red onion, chop the spinach, and shred the mozzarella if needed.
- Blot the mushrooms and spinach with a paper towel.
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Ready when: Oven reaches 425°F (220°C) and vegetables are sliced thinly and evenly
Tip: Thin, even slices cook through in the short topping bake.
Blend the batter
- Add the drained quinoa, the flax egg, ½ cup (120 ml) water, olive oil, salt, garlic powder, oregano and baking powder to a blender.
- Blend on high for 60 to 90 seconds, stopping once to scrape down the sides, until the batter is thick and pourable like pancake batter with a very fine, slightly flecked texture.
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Ready when: Batter is thick, mostly smooth, with no whole visible grains and spreads slowly off a spoon
Tip: If the blender stalls, add water 1 tbsp (15 ml) at a time. A batter that is too thin will make a flimsy crust.
Spread the crust
- Pour the batter into the center of the parchment.
- Using a wet offset spatula or the back of a spoon, spread it into an even round about 11 inches (28 cm) wide and ¼ inch (6 mm) thick.
- Keep the thickness even and make the edge slightly thicker, about ⅜ inch (1 cm), to form a rim.
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Ready when: An even round with no see-through thin patches and a slightly raised rim
Tip: Dip your spatula in water as you go to stop the batter sticking and to smooth the surface.
Pre-bake the crustOven 425°F / 220°C
- Bake the plain crust on the center rack at 425°F (220°C) for 22 minutes, until the surface looks dry, the edges are deep golden brown, and the center is set and no longer wet when pressed lightly.
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Ready when: Edges deep golden, top dry and firm to a light touch
Tip: Don't rush this step. An underbaked base will stay soft and can't be lifted by a slice.
Flip and crispOven 425°F / 220°C
- Remove the baking sheet.
- Place a second sheet of parchment on top of the crust, then lay another baking sheet or a large cutting board over it.
- Using oven mitts, flip everything over, remove the top sheet and peel off the original parchment.
- Slide the crust, now bottom-side up, back onto the lined baking sheet.
- Bake 6 minutes more at 425°F (220°C).
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Ready when: Both sides are golden and the crust feels firm and crisp when tapped
Tip: If the crust cracks while flipping, press it back together; the cheese will hold it.
Add the toppings
- Spread ½ cup (125 g) tomato sauce over the crust, leaving a ½-inch (1 cm) border.
- Sprinkle with half the mozzarella, then scatter on the bell pepper, mushrooms, onion and spinach.
- Finish with the remaining mozzarella.
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Ready when: Toppings are evenly distributed in a single layer, with the border bare
Tip: Don't overload the pizza; piled-up vegetables release steam and make the middle soggy.
Bake the pizzaOven 425°F / 220°C
- Return the pizza to the center rack and bake at 425°F (220°C) for 12 minutes, until the cheese is fully melted, bubbling and lightly browned in spots, and the vegetables have softened at the edges.
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Ready when: Cheese bubbling with golden spots and crust edge deep golden
Tip: For more browning, broil on high for the last 1 minute, watching closely.
Rest, garnish and slice
- Let the pizza stand on the baking sheet for 5 minutes so the cheese sets and the crust firms up.
- Top with torn basil and red pepper flakes if using.
- Slide onto a cutting board and cut into 8 slices with a pizza cutter or sharp knife.
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Ready when: Cheese no longer runs when the pizza is nudged, and the crust holds when a slice is lifted
Tip: Cutting too soon drags the cheese and can crack the crust.
Good to know
Tips
- Rinse the quinoa really well before soaking. Any leftover saponin coating makes the crust taste bitter.
- Batter thickness is everything: about ¼ inch (6 mm) gives a crust that is crisp outside and tender inside. Thicker crusts need longer to dry out.
- Use thick sauce and low-moisture mozzarella (not fresh) to keep the base crisp.
- Serve with a green salad; the crust is sturdy but best eaten with a fork if heavily topped.
Make ahead
"Soak and drain the quinoa up to 1 day ahead and keep it covered in the fridge. The crust can be fully pre-baked (through the flip step), cooled completely, wrapped, and refrigerated up to 2 days or frozen up to 2 months; top and bake straight from the fridge for 12 to 14 minutes, or from frozen for 15 to 17 minutes."
Storage & reheating
"Room temperature: up to 2 hours. Fridge: store slices in an airtight container with parchment between layers for up to 4 days. Freezer: freeze slices on a tray, then bag them for up to 2 months. Reheat in a 400°F (200°C) oven or toaster oven for 8 to 10 minutes (12 to 15 from frozen) until the crust is crisp; avoid the microwave, which makes it soft."
Substitutions
- ground flaxseed → 2 tbsp chia seeds ground fine, with the same 6 tbsp water. Gels in the same way; the crust will have faint dark flecks.
- low-moisture part-skim mozzarella → Dairy-free mozzarella-style shreds. Makes the pizza vegan; melting and browning vary by brand, so watch it near the end.
- white quinoa, dry → Red or tri-color quinoa. Works the same but gives a darker, earthier, slightly nuttier crust.
- baby spinach → Thinly sliced zucchini, patted dry, or halved cherry tomatoes. Use similar quantities and blot well to avoid extra moisture.
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