Veggie Quiche with Spaghetti Squash Crust

Veggie Quiche with Spaghetti Squash Crust is a light, colorful, and vegetable-forward take on the classic quiche—reimagined with a golden, gently crisped spaghetti squash crust. It’s the kind of dish that looks stunning on a weekend brunch table, travels well to potlucks, and reheats beautifully for weekday breakfasts. This version highlights fresh summer produce and a creamy coconut milk custard, balanced with aromatic basil and just the right touch of spice.

This recipe yields a quiche that slices cleanly, showcases ribbons of zucchini and flashes of red pepper, and keeps the cookbook simple: spaghetti squash, garden-style vegetables, pantry spices, eggs, and coconut milk. Below you’ll find a full ingredient list, clear step-by-step directions rewritten for clarity, and tips to get the best texture from your squash crust and custard.

Why you’ll love this recipe

• Bright, fresh vegetables—sliced zucchini, tomato, red bell pepper, and red onion—bring color and texture.
• The spaghetti squash crust bakes up with a delicate crispness that supports the custard without overpowering it.
• Full-fat coconut milk makes the filling luxuriously creamy and naturally dairy-free, while eggs create a stable set.
• Simple seasoning—dry mustard, garlic powder, salt, and black pepper—keeps flavors balanced and approachable.
• Finely sliced basil folded in at the end gives a fragrant, savory lift to every bite.

Ingredients

• 3 cups spaghetti squash, cooked
• salt and pepper, to taste
• coconut oil, for greasing
• 1 cup tomatoes, small, fresh, any color
• 1 zucchini, small, sliced into thin rounds
• 1 red bell pepper, diced
• 1/4 red onion, sliced thin
• 1 tablespoon olive oil
• 5 eggs
• 2/3 cup coconut milk, canned, full-fat
• 1/2 teaspoon salt
• 1/4 teaspoon dry mustard
• 1/2 teaspoon ground black pepper
• 1/4 teaspoon garlic powder
• 2 tablespoons basil, fresh, finely sliced

Equipment

• Medium bowl
• Frying pan or skillet
• 9-inch pie dish or quiche pan
• Mixing whisk or fork
• Baking sheet (optional, for easier handling)
• Oven preheated to 375°F (190°C)

Prep and overview

Start by making sure your spaghetti squash is cooked, drained of excess moisture, and fluffed into strands. The process below walks you through forming the squash crust, sautéing the vegetables, whisking the custard, assembling the quiche, and baking it to a custardy finish. The recipe keeps the same ingredient amounts as provided and follows the original order of steps, rewritten clearly so anyone can follow along.

Step-by-step Directions

1. Preheat your oven to 375°F (190°C). Grease a 9-inch pie dish or quiche pan with a thin layer of coconut oil so the squash crust releases easily after baking.
2. Prepare the spaghetti squash strands: if your squash is already cooked, place 3 cups of cooked spaghetti squash in a medium bowl. Use a clean kitchen towel or paper towels to press gently on the squash and remove excess moisture; you want the strands to be as dry as possible so the crust holds together and crisps.
3. Form the crust in the greased pan: transfer the drained spaghetti squash into the prepared pie dish. Press and spread the strands evenly along the bottom and up the sides to form a crust about 1/4 inch thick. Make sure the squash layer is compact and consistent so it will bake evenly.
4. Bake the squash crust for 12–15 minutes to set it and start developing a light color. Remove the dish from the oven and let the crust cool slightly while you prepare the filling. Keep the oven at 375°F (190°C).
5. Cook the vegetables: heat 1 tablespoon olive oil in a skillet over medium heat. Add the thinly sliced 1/4 red onion and diced 1 red bell pepper. Sauté for about 3–4 minutes, stirring occasionally, until the onion becomes translucent and the pepper begins to soften.
6. Add the zucchini slices to the skillet and continue to cook for another 2–3 minutes until the zucchini is slightly tender but still holds its shape. Remove the pan from the heat and set the vegetables aside to cool slightly.
7. Prepare the custard: in a medium bowl, crack in 5 eggs. Add 2/3 cup canned full-fat coconut milk, 1/2 teaspoon salt, 1/4 teaspoon dry mustard, 1/2 teaspoon ground black pepper, and 1/4 teaspoon garlic powder. Whisk vigorously until the mixture is smooth and evenly blended. Taste the custard and adjust the seasoning with salt and pepper to your preference.
8. Assemble the quiche: distribute the sautéed vegetables evenly over the pre-baked spaghetti squash crust. Scatter 1 cup of small fresh tomatoes across the top; if the tomatoes are large, cut them into smaller pieces so they nestle into the filling. Gently pour the egg and coconut milk custard over the assembled vegetables, ensuring it evenly fills the spaces and reaches the edges of the squash crust.
9. Season and add basil: sprinkle a final pinch of salt and pepper over the surface if desired. Scatter 2 tablespoons of finely sliced fresh basil across the top so it infuses the custard while baking.
10. Bake until set: place the quiche in the preheated oven and bake for 30–40 minutes, or until the custard is set around the edges and slightly wobbly in the center. A thin knife or toothpick inserted near the center should come out mostly clean. If the top starts to brown too quickly, loosely tent the quiche with a piece of foil for the remaining baking time.
11. Cool and serve: remove the quiche from the oven and allow it to rest for at least 10 minutes before slicing. The resting time lets the custard finish setting and makes clean slices easier. Serve warm or at room temperature, garnished with an extra sprinkle of fresh basil if you like.

Troubleshooting and tips

• If your spaghetti squash crust feels too wet while forming, press it again with towels to remove more moisture. Excess liquid is the most common cause of a soggy crust.
• To get a crisper bottom, after forming the crust you can place the pie dish on a preheated baking sheet in the oven—this delivers more direct heat and helps brown the underside.
• Slice the zucchini thinly so it cooks quickly and nests into the custard without leaving large gaps.
• Use full-fat canned coconut milk for a creamy, stable custard; it blends smoothly with the eggs and results in a silky texture.
• Leftovers keep well in the refrigerator for 3–4 days. Reheat gently in a low oven or in a skillet to preserve texture.

Variations and swaps

• If you want a heartier dish, fold in a cup of cooked beans or cooked lentils with the vegetables before adding the custard.
• Sturdier greens like chopped kale or Swiss chard can be cooked with the onion and pepper for an earthier profile.
• For extra herb flavor, add 1 tablespoon chopped parsley along with the basil, or fold in 1 teaspoon chopped thyme to the custard.
• To make smaller, individual portions, divide the spaghetti squash into muffin tins and bake for about 20–25 minutes until the custard is set.

Serving suggestions

This quiche is great on its own or paired with a crisp green salad dressed with lemon and olive oil. A side of roasted potatoes or crusty bread complements the texture of the squash crust nicely. For a brunch spread, add a bowl of fresh fruit and a simple yogurt or citrus dressing on the side.

Storage

Allow the quiche to cool completely before storing. Keep leftovers tightly covered in the refrigerator for up to four days. Reheat slices in a low oven (about 325°F / 160°C) until warmed through, or reheat in a skillet over medium-low heat to preserve the crust texture.

Final notes

This Veggie Quiche with Spaghetti Squash Crust is an effortless, vegetable-forward centerpiece that proves a crust doesn’t need to be flour-based to be satisfying. The creamy coconut milk and eggs set into a custard that contrasts beautifully with the gently roasted vegetables and herby basil. Make it for a leisurely weekend brunch, a make-ahead breakfast, or a bright addition to a casual dinner.

Enjoy this colorful quiche warm, at room temperature, or chilled—the flavors develop over time, and each slice will reward you with a mix of tender spaghetti squash, silky custard, and fresh garden vegetables.