If you have been searching for a breakfast that feels indulgent but actually fuels your body properly, this healthy egg white and roasted pepper breakfast quiche is exactly what your mornings need. It has all the comfort and visual appeal of a classic quiche, but with a few smart swaps that keep the calories low, the protein high and the flavour completely intact. Roasted peppers bring a natural sweetness and depth that you simply cannot get from raw vegetables, and paired with fluffy egg whites, creamy feta and a handful of wilted spinach, every single slice is something to look forward to.
The base here uses a thin oat and almond flour crust rather than a traditional butter-heavy pastry shell. This keeps things lighter while adding a gentle nuttiness and a decent hit of fibre. If you are short on time, you can skip the crust entirely and go crustless, which works brilliantly for a keto-friendly version too. The filling itself is where the real nutrition lives. Egg whites are one of the most bioavailable sources of lean protein you can get, delivering around 3.6 grams of protein per large white with virtually no fat or cholesterol. Combined with roasted red and yellow peppers, which are loaded with vitamin C, beta-carotene and antioxidants, this quiche genuinely earns its healthy label rather than just borrowing it.
Roasting your own peppers at home is simpler than it sounds and makes a remarkable difference. When peppers hit a hot oven, their natural sugars concentrate and caramelise slightly, giving you a smoky, slightly sweet flavour that shop-bought jarred versions only hint at. You can roast a big batch on a Sunday, keep them in the fridge, and use them across the week in wraps, salads or another quiche. That kind of meal prep thinking is exactly what makes healthy eating feel effortless rather than exhausting. This quiche itself keeps beautifully in the fridge for up to four days, so making it on a weekend means breakfast is sorted for most of the working week.
Nutritionally, each slice clocks in at around 175 calories with roughly 18 grams of protein and just 4 grams of fat. That protein hit is significant because it keeps you full and supports muscle maintenance, which matters whether you are an athlete or just someone who wants to avoid the 10am snack craving. The reduced sodium feta adds a salty, tangy punch without overwhelming the dish, and a small scattering of fresh chives on top before serving gives it a beautiful finishing touch. This is the kind of recipe you will make once and then find yourself making on rotation, not because you feel like you should, but because it genuinely tastes good and makes you feel great.
Ingredients
- 2 medium red bell peppers (halved and deseeded)
- 1 medium yellow bell pepper (halved and deseeded)
- 1 tsp olive oil (for roasting peppers)
- 10 large egg whites (from approximately 10 eggs or use carton egg whites)
- 60 ml unsweetened almond milk (or any low-fat milk of choice)
- 80 g reduced-fat feta cheese (crumbled)
- 60 g fresh baby spinach (roughly chopped)
- 1 small red onion (finely diced)
- 2 cloves garlic (minced)
- 1 tsp olive oil (for sauteing vegetables)
- 1 tsp dried oregano
- 0.5 tsp smoked paprika
- 0.3 tsp ground black pepper
- 0.3 tsp sea salt (optional, reduce if watching sodium)
- 2 tbsp fresh chives (finely chopped, for garnish)
- 80 g rolled oats (blended into flour, for crust)
- 40 g ground almonds (for crust)
- 1 tbsp olive oil (for crust)
- 2 tbsp cold water (for crust, added gradually)
- 1 pinch sea salt (for crust)
Instructions
- 1
Preheat your oven to 220 degrees Celsius (200 fan, 425 Fahrenheit). Place the halved red and yellow peppers cut-side down on a lined baking tray. Drizzle with 1 teaspoon of olive oil. Roast for 25 to 30 minutes until the skins are charred and blistered.
Once out of the oven, cover the peppers with a clean tea towel for 10 minutes. The steam makes the skins slip off easily.
- 2
While the peppers roast, make the crust. Blend the rolled oats in a food processor until they resemble a rough flour. Add the ground almonds, a pinch of salt and 1 tablespoon of olive oil. Pulse briefly to combine, then add cold water one tablespoon at a time until the mixture just comes together into a soft dough.
Do not over-mix the dough or it will become tough. It should hold together when pressed but still feel slightly crumbly.
- 3
Reduce the oven to 180 degrees Celsius (160 fan, 350 Fahrenheit). Press the dough evenly into a lightly greased 9-inch quiche or tart tin, working it up the sides too. Prick the base all over with a fork. Bake blind for 10 minutes until just set. Remove and allow to cool slightly.
Lay a piece of baking parchment over the dough and fill with dried beans or rice for an even bake during blind baking.
- 4
Peel and discard the charred skins from the cooled roasted peppers. Slice the flesh into thin strips, roughly 1 cm wide. Set aside.
- 5
Heat 1 teaspoon of olive oil in a small non-stick frying pan over medium heat. Add the diced red onion and cook for 3 to 4 minutes until softened. Add the minced garlic and cook for another minute, stirring to prevent burning. Add the chopped spinach and stir until just wilted, about 1 minute. Remove from the heat.
Make sure most of the moisture from the spinach has evaporated before adding it to the quiche filling. Excess water will make the filling watery.
- 6
In a large mixing bowl, whisk together the egg whites, almond milk, dried oregano, smoked paprika, black pepper and sea salt until well combined and slightly frothy.
Whisking the egg whites thoroughly incorporates a small amount of air, giving the filling a lighter, slightly puffed texture as it bakes.
- 7
Scatter the sauteed spinach and onion mixture evenly over the par-baked crust. Arrange the roasted pepper strips on top in an even layer. Crumble the feta over everything. Pour the egg white mixture carefully over the filling, allowing it to settle between the vegetables.
Pour slowly from the edge of the tin so the vegetables stay in place and do not float to one side.
- 8
Bake the quiche at 180 degrees Celsius for 28 to 32 minutes, until the filling is set in the centre and the top is lightly golden. A skewer inserted into the middle should come out clean. Remove from the oven and allow to rest for 10 minutes before slicing.
The quiche will puff up during baking and settle as it cools. This is completely normal and does not affect the texture.
- 9
Scatter fresh chives over the top before serving. Slice into 6 even wedges and serve warm or at room temperature.
Nutrition per serving
175kcal
Calories
18g
Protein
12g
Carbs
4g
Fat
3g
Fibre
4g
Sugar
320mg
Sodium
Pro Tips
- ✓
Use carton egg whites if you want to save time separating eggs. Look for pure liquid egg whites with no additives.
- ✓
Roasting a double batch of peppers takes almost no extra effort and gives you a ready-made topping for salads, wraps or other meals through the week.
- ✓
For the cleanest slices, allow the quiche to cool for at least 10 minutes before cutting. A sharp serrated knife works best.
- ✓
If your feta is particularly salty, taste your egg white mixture before adding the salt and adjust accordingly.
- ✓
The oat crust is naturally gluten-free if you use certified gluten-free oats.
Frequently Asked Questions
Variations
- •
Mediterranean Herb Version
Add 2 tablespoons of sun-dried tomatoes (well drained), a handful of kalamata olives (sliced) and swap the oregano for a mix of fresh thyme and basil. The briny, herby profile is incredibly satisfying.
- •
Crustless Keto Quiche
Skip the oat and almond crust entirely. Grease your tin generously with olive oil and bake the filling straight in the tin. This brings the carbs down significantly and is a great low-carb morning option.
- •
Spicy Chorizo-Style Chicken Version
Add 100g of diced chicken chorizo or spiced chicken sausage, cooked and sliced, to the filling layer before pouring in the egg white mixture. This adds extra protein and a smoky, warming depth.
- •
Dairy-Free Version
Replace the feta with a dairy-free feta alternative or simply omit it and add an extra tablespoon of nutritional yeast into the egg white mixture for a savoury, cheesy flavour without any dairy.
Substitutions
- •Almond milk → Oat milk, skimmed dairy milk or soy milk (Any unsweetened, low-fat milk works here. The liquid adds just enough creaminess to the egg whites without significantly changing the nutrition.)
- •Reduced-fat feta → Goats cheese or part-skim ricotta (Goats cheese gives a similarly tangy flavour. Ricotta creates a creamier, milder filling. Both work well with the roasted peppers.)
- •Baby spinach → Kale, Swiss chard or rocket (Kale and Swiss chard should be finely chopped and wilted for slightly longer as they are tougher. Rocket can be used raw and stirred in just before pouring.)
- •Rolled oats (for crust) → Certified gluten-free oats or a pre-made gluten-free oat flour (If you have a gluten sensitivity, ensure your oats are certified gluten-free. The texture of the crust remains the same.)
- •Fresh egg whites → Carton liquid egg whites (Carton egg whites are a great time saver. Use approximately 30ml of liquid egg white per large egg white called for in the recipe.)
🧊 Storage
Store cooled quiche slices in an airtight container in the refrigerator for up to 4 days. Reheat individual slices in the microwave for 60 to 90 seconds or in a 160 degree Celsius oven for 10 minutes. Freeze well-wrapped slices for up to 2 months.
📅 Make Ahead
This quiche is ideal for weekend meal prep. Roast the peppers and saute the vegetables the day before, then assemble and bake on the day or fully bake in advance and refrigerate. The flavour actually improves overnight as everything melds together.
