Family Suppers Casseroles & Bakes

Cheesy Broccoli Egg Bake for Supper

A savory broccoli, egg, and cheese bake sturdy enough for supper, not just brunch, with practical reheating notes for the next day.

  • By Ruthann
  • Published March 17, 2026
  • Last reviewed March 17, 2026
  • Total time 60 min
  • Yield 8 servings
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Egg supper has to feel like supper, not like breakfast that wandered into the wrong meal. Broccoli, onion, and enough cheese give this bake the backbone it needs, and the leftovers still make sense the next day.

Recipe Rescue

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Get the safe cooling, storage, reheating, and carryover logic for leftovers built around eggs, broccoli, and cheese.

Recipe details

Timing & yield

Prep
20 minutes
Cook / bake
40 minutes
Total
60 minutes
Yield
8 servings

Ingredients

Vegetable base

  • 1 tablespoon butter
  • 1 small onion, diced
  • 12 ounces broccoli, chopped small
  • 1 teaspoon kosher salt, divided
  • 1/2 teaspoon black pepper, divided

Custard

  • 8 large eggs
  • 2 1/2 cups milk
  • 1 teaspoon dry mustard
  • 1 1/2 cups shredded cheddar cheese

Method

  1. Step 1. Heat the oven to 350 degrees Fahrenheit and grease a 9x13 baking dish.
  2. Step 2. Melt the butter in a skillet over medium heat and cook the onion with the broccoli and half the salt and pepper until the broccoli turns bright and starts softening.
  3. Step 3. In a bowl, whisk the eggs, milk, dry mustard, remaining salt and pepper until evenly blended.
  4. Step 4. Spread the broccoli mixture in the dish, scatter over the cheese, and pour the custard on top.
  5. Step 5. Bake for 35 to 40 minutes, until the center reaches 160 degrees Fahrenheit and the middle no longer ripples when nudged.
  6. Step 6. Rest for 10 minutes before cutting so the bake firms enough to serve in clean pieces.

Equipment

  • skillet
  • mixing bowl
  • 9x13 baking dish

Storage & safety

Refrigerate leftovers within 2 hours and use within 4 days. Reheat covered so the eggs stay tender and the top does not dry out.

Safe minimum internal temperature: 160°F

Rest time: 10 minutes

Because this is an egg-and-dairy supper bake, refrigerate promptly and do not leave it sitting on the table too long after dinner.

Reheat leftovers to 165°F before serving hot again.

Egg bakes should be set all the way through in the center before serving.

Troubleshooting

The center stayed wet
Bake a few more minutes until the temperature reaches 160 degrees Fahrenheit and the middle is set.
The broccoli felt too hard
Saute it a little longer before baking or chop it smaller next time so it softens more evenly.

Recipe rescue notes

The bake tastes flat

Likely cause: The broccoli and onion needed firmer seasoning before the custard went in.

Fix: Sprinkle a little more salt over the hot cut pieces and serve with salsa or hot sauce.

Next time: Season the vegetable base first, because the eggs and milk soften everything once baked.

Substitutions

Cheddar cheese
Use Monterey Jack or a cheddar-Jack blend. — Keep the cheese amount similar so the bake still slices cleanly after cooling.

Carryover / Next Meal Ideas

Supper quesadilla filling

Chop reheated leftovers and tuck them into tortillas with extra cheese for a second meal that does not feel like repeats by force.

  • Warm the filling first so it spreads more evenly in the tortillas.

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