Elevate your lunch with these easy and delicious open-faced devilled egg sandwiches. Quartered hard-boiled eggs are placed on top of a mayonnaise, mustard and herb spread all on top of toast slices.

Open-faced devilled egg sandwiches on plate.

If you’re looking for a change from the usual egg salad sandwich, these open-faced devilled egg sandwiches will fit the bill perfectly. Hard-boiled eggs sit atop toasted bread with a delicious mayonnaise and mustard sauce, flavoured with fresh herbs.

Ingredients and substitutions

Eggs – Any size of eggs will work here. I love to keep hard-boiled eggs in the fridge so I always have some for salads or sandwiches like this one!

Mayonnaise – Use your favourite mayonnaise or salad dressing.

Mustard – I use yellow prepared mustard with a touch of powdered mustard as it is the flavour I associate with devilled eggs. You can easily substitute Dijon mustard if you like and the powdered mustard is optional.

Herbs – Start with chives or green onion (finely diced). If you have some fresh or dried dill and enjoy the flavour it makes a nice addition. Finely chopped dill pickle makes a great substitute for the dill. You could also skip the dill and opt for finely chopped capers if you like.

Bread – I used sourdough bread here, but I’ve also made it with multigrain and brown bread and they are all delicious. Use what you have and enjoy.

How to make devilled egg sandwhiches

Lowering egg into boiling water with a spoon.
1
Ingredients gathered to assemble sandwiches.
2
Toasted bread cut into triangles.
3
  1. Boil the eggs to hard-boiled and remove to ice water to cool. Peel immediately or refrigerate if boiling ahead.
  2. Toast the bread and lightly butter if you like. Remove some or all of the crusts, if you like.
  3. Cut the toast into triangles.
Adding fresh herbs to mustard sauce.
4
Mustard sauce spread onto toast triangles.
5
Assemble devilled egg sandwiches on cutting board.
6
  1. Mix together the mustard mayonnaise spread.
  2. Spread onto the toast triangles.
  3. Top with a quartered egg, then garnish with paprika and additional herbs and flaky salt.

Recipe tips

  • Feel free to get creative with the mustard and mayonnaise spread. Adjust the mustard amount to your taste and try different combinations of herbs. You can add as much or as little as you like.
  • If you prefer, you can slice the hard-boiled eggs into rounds rather than cutting them in quarters.
  • As noted above, I love to have hard-boiled eggs in the fridge. I cook them off when I have a moment and keep them in a bowl in the fridge. They are great for salads or for making this sandwich! Hard-boiled eggs (in the shell or peeled) will keep the fridge for up to 7 days.
Open-faced devilled egg sandwiches on plate.

Making ahead and storing

You can make the hard-boiled eggs ahead and refrigerate. The mustard sauce can also be made ahead and refrigerated. To serve, simply toast some bread and top.

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Open-faced devilled egg sandwiches on plate.

Get the Recipe: Devilled Egg Sandwiches

Elevate your lunch with these easy and delicious open-faced devilled egg sandwiches. Quartered hard-boiled eggs are placed on top of a mayonnaise, mustard and herb spread all on top of toast slices.
5 stars from 2 ratings
Prep Time: 10 minutes
Cook Time: 15 minutes
Total Time: 25 minutes
Yield: 8 servings

Ingredients

  • 4 slices bread, toasted *see Note 1 below
  • 2 hard-boiled eggs, quartered or sliced into rounds

Mayonnaise Mustard Spread:

  • 1/4 cup mayonnaise, or salad dressing
  • 2 teaspoons yellow prepared mustard, or Dijon mustard
  • Pinch mustard powder, optional
  • 2 Tablespoons chives or green onion, finely chopped
  • 2 teaspoons fresh dill, chopped or finely chopped dill pickle or 1/2 tsp dried dill
  • Salt and freshly ground pepper

For garnish:

  • Paprika
  • Flaky salt and freshly ground pepper
  • Sliced chives or green onion

Instructions
 

  • For the hard-boiled eggs: Bring some water to a boil in a saucepan over high heat. Use a spoon to gently add the eggs to the boiling water, then lower the heat slightly. Allow the eggs to boil for 15 minutes. Meanwhile, prepare a bowl of cold water with 5 or 6 ice cubes. When the eggs are ready, transfer them to the ice water and allow them to stand for 10 minutes. Peel and use immediately or refrigerate for up to 7 days.
  • Prepare the mustard spread: Combine all the ingredients in a small bowl and stir together well. Set aside. *Can be made ahead and refrigerated. Leftover spread can also be refrigerated for 3-4 days.
  • To prepare the sandwiches: Toast the bread slices, then remove some or all of the crusts (optional). Lightly butter the slices if you like, then spoon a dollop of the mustard spread on top. Use a spoon to spread it out a bit. Place a boiled egg quarter on top of the mustard spread. Garnish with paprika, top with additional sliced chives or green onion and sprinkle with a bit of flaky salt.

Notes

Note 1: You can use any bread you have and enjoy. I used sourdough bread here, but I also enjoy multigrain, brown or rye bread.
Be sure to read the notes above the Recipe Card, for more tips on making this recipe. 
Cuisine: American, Canadian
Course: Lunch
Serving: 1serving, Calories: 107kcal, Carbohydrates: 7g, Protein: 3g, Fat: 7g, Saturated Fat: 1g, Polyunsaturated Fat: 4g, Monounsaturated Fat: 2g, Trans Fat: 0.02g, Cholesterol: 50mg, Sodium: 140mg, Potassium: 43mg, Fiber: 1g, Sugar: 1g, Vitamin A: 88IU, Vitamin C: 0.3mg, Calcium: 26mg, Iron: 1mg
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