This is egg salad baked in the oven until the top turns golden and the whole thing firms up enough to serve with a fork. It takes 35 minutes start to finish, uses one bowl and one baking dish, and the result is warm, creamy, and genuinely satisfying for a weeknight dinner or easy lunch.
Shopping notes
- Mayonnaise: Full-fat works best here — the fat helps the mixture hold together in the oven. A dairy-free mayo swaps in directly with no other changes needed.
- Dijon mustard: Regular yellow mustard will work in a pinch, but Dijon gives a sharper, less sweet result that balances the eggs better.
- Fresh dill: If you only have dried, use 1 teaspoon instead of 1 tablespoon. Dried dill is more concentrated and can turn bitter if you use a 1:1 swap.
Why this recipe works
Two things matter here. First, chopping the eggs into medium chunks rather than mashing them means you get distinct pieces that hold their shape after baking — mashed eggs turn dense and rubbery in the oven. Second, the mayonnaise and mustard mixture coats every chunk before baking, which keeps the eggs from drying out during the 20-minute cook time. The result is a set, lightly browned top with a still-creamy interior — closer to a gratin than a sandwich filling.
Troubleshooting
- Top isn’t browning after 20 minutes: Oven temperatures vary. Switch to broil for the last 2 minutes and watch it closely — it can go from pale to overdone fast.
- Mixture looks watery in the dish: This usually means the eggs were still slightly warm when mixed. Let hard-boiled eggs cool completely before combining with the mayo mixture.
- Texture is rubbery after baking: The dish went too long in the oven. Pull it out as soon as the top is lightly golden — the interior will continue to set from residual heat.
- Flavor tastes flat: Taste the mixture before it goes into the oven and adjust salt. Eggs need more seasoning than you expect, especially when baked.
- Mixture sticks to the baking dish: A light swipe of oil or cooking spray on the dish before filling prevents this and makes serving much easier. Skip the garnish on top — not worth the extra dish to prep it.
Storage and reheating
Store leftovers covered in the baking dish or transferred to an airtight container in the fridge for up to 3 days. Reheat individual portions in the microwave for 60 to 90 seconds — it comes back to a good texture without drying out. Do not freeze this dish; mayonnaise separates when frozen and thawed, and the eggs turn spongy. If you made it ahead unbaked, keep it refrigerated for no more than 24 hours before baking, as the celery and onion release moisture over time and can make the mixture watery.
Baked Egg Salad
Equipment
- Oven-safe baking dish
- Bowl
- Whisk or fork
- Knife
- Cutting board
Ingredients
- 6 large eggs preferably organic
- ¼ cup mayonnaise
- 1 tbsp Dijon mustard
- 1 stalk celery finely chopped
- ¼ cup red onion diced
- 1 tbsp fresh dill chopped
- ½ tsp salt to taste
- ¼ tsp freshly ground black pepper
Instructions
- Preheat your oven to 375°F (190°C).
- Hard boil the eggs. Once boiled, peel and chop them into medium-sized chunks.
- In a large bowl, combine the mayonnaise, Dijon mustard, chopped celery, diced red onion, fresh dill, salt, and black pepper. Mix well until smooth.
- Gently fold the chopped eggs into the mixture, ensuring they are evenly coated.
- Transfer the mixture to an oven-safe baking dish and smooth the top with a spatula.
- Bake in the preheated oven for about 20 minutes, or until the top begins to lightly brown.
Notes
- For a twist, consider adding a sprinkle of smoked paprika before baking for a hint of smoky flavor.
- If you're looking for a dairy-free version, substitute mayonnaise with a dairy-free variety.
- You can prepare the salad the night before and store it in the fridge; bake it fresh when you are ready.
Nutrition
Frequently asked questions
Do I need to let the eggs cool before mixing everything together?
Yes — mix with fully cooled eggs. Warm eggs start to cook the mayonnaise, which can make the mixture separate and look greasy before it even hits the oven.
Can I make this without an oven-safe baking dish — like in a skillet or a pie pan?
A metal pie pan or any oven-safe skillet works fine. Just make sure the sides are at least an inch tall so the mixture doesn’t bubble over as it heats.
Is this recipe actually filling enough for dinner, or is it more of a side?
It works as a main for four people when served with bread, crackers, or a simple green salad alongside. On its own, the 210 calories per serving makes it a light meal rather than a hearty one.
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