3-Ingredient Onion Egg Bake
This humble bake is the kind of thrifty comfort food my nana relied on when the pantry was nearly bare but a hearty meal was still needed. Think of it as a crustless, flourless onion “pie” or a thick frittata: just deeply caramelized onions, plenty of eggs, and a touch of salt to bring out every bit of flavor.
Baked in a simple glass dish, it rises into a pale golden slab, marbled with ribbons of sweet, browned onion and finished with a tender crust. It’s practical, budget‑friendly, and far more luxurious than its short ingredient list suggests.
Serve warm, cut into generous squares, with a crisp green salad and sharp vinaigrette to balance the richness. It pairs beautifully with sliced tomatoes or cucumbers, a dollop of tangy yogurt or sour cream, or sautéed greens. For brunch, add fresh fruit and coffee; for a light supper, roasted vegetables or a clear broth‑based soup. Leftovers are excellent at room temperature—perfect tucked into a lunchbox with raw veggies or pickles for contrast.
3‑Ingredient Onion Egg Bake
Ingredients
| Ingredient | Amount | Notes |
|---|---|---|
| Neutral oil or butter | 2 tbsp | For greasing dish & cooking onions |
| Yellow onions, thinly sliced | 2 large | |
| Eggs | 8 large | |
| Fine salt | 1 tsp | Plus more to taste |
Directions
- Preheat & Prepare
Heat oven to 350°F (175°C). Lightly grease an 8×8‑inch glass baking dish with a little oil or butter. - Caramelize the Onions
Warm the remaining fat in a skillet over medium heat. Add onions and salt, stirring to coat. Cook slowly, stirring occasionally, until soft, golden, and caramelized in spots, 20–30 minutes. Adjust heat to prevent burning. - Whisk the Eggs
In a large bowl, whisk eggs vigorously until fully blended and slightly frothy. - Combine
Taste onions and adjust seasoning. Let cool 3–5 minutes, then stir into eggs until evenly distributed. - Bake
Pour mixture into prepared dish, smoothing the top. Bake 25–35 minutes, until puffed, set in the center, and lightly golden. A knife inserted should come out mostly clean. - Rest & Serve
Let rest 5–10 minutes. Cut into thick squares and serve warm, enjoying the custardy texture and sweet‑savory onion flavor.
This recipe is proof that even the simplest ingredients can deliver comfort and elegance when treated with care.
