5-Ingredient Quick Breakfast Casserole

Prep Time: 10 minutes | Cook Time: 35 minutes | Total Time: 45 minutes | Servings: 6

This 5-ingredient breakfast casserole is what I make when I need breakfast on the table fast. No fancy ingredients, no complicated steps, just five things you probably already have: eggs, bread, cheese, milk, and seasoning. It’s simple, it works, and it tastes better than something this easy has any right to.

Why I Keep Making This Recipe

Actually just 5 ingredients – Not “5 ingredients plus salt, pepper, oil, and 8 other things.” Five ingredients total, including the seasoning.

Ready in 45 minutes – Ten minutes to throw it together, 35 minutes in the oven. No advance prep, no overnight soaking.

Minimal cleanup – One bowl to mix eggs, one pan to bake. That’s it.

Budget-friendly – Everything costs under $10 total. Eggs and bread are cheap, cheese stretches.

Customizable base – Once you know this basic formula, you can add whatever you have: leftover vegetables, cooked sausage, different cheese.

---

What You’ll Need

Eggs – Eight large eggs. This is your base. The eggs set into a custard that holds the whole casserole together.

Bread – Six slices of bread, any kind. White sandwich bread, wheat, sourdough, whatever. Tear it into rough pieces. You don’t need fancy bread for this to work.

Cheese – Two cups shredded cheese. Cheddar is standard, but use what you have. Pre-shredded from a bag is fine. Save yourself the work.

Milk – One cup. Whole milk makes it richer, but 2% works. The milk thins the eggs so they’re not rubbery.

Seasoning – Salt, pepper, and garlic powder mixed together. This counts as your fifth ingredient. One teaspoon salt, half teaspoon pepper, half teaspoon garlic powder.

---

How to Make 5-Ingredient Quick Breakfast Casserole

Step 1: Prep

Preheat your oven to 375°F. Grease a 9×13-inch baking dish with butter or cooking spray.

Step 2: Tear the Bread

Tear the bread slices into bite-sized pieces. Don’t use a knife, just tear them with your hands. Irregular pieces are fine, they actually soak up the egg mixture better than perfect cubes.

Scatter the torn bread evenly in your greased baking dish.

Step 3: Mix the Eggs

In a large bowl, whisk together the eggs, milk, salt, pepper, and garlic powder. Whisk until the yolks and whites are completely combined and the mixture is smooth.

Step 4: Assemble

Pour the egg mixture over the bread in the baking dish. Use a fork to press the bread down into the liquid so all the pieces get soaked.

Sprinkle the shredded cheese evenly over the top.

Step 5: Bake

Bake for 30-35 minutes until the center is set (no jiggle), the edges are golden, and the cheese is melted and bubbly. Internal temperature should reach 160°F.

Let it cool for 5 minutes before cutting. The eggs need a minute to finish setting.

---

Storage and Reheating

Refrigerator: Cover and store for up to 4 days.

Freezer: Cut into portions, wrap individually, freeze for up to 2 months.

Reheating:

• Microwave: 60-90 seconds per portion
• Oven: 350°F for 10-15 minutes, covered with foil

---

Recipe Variations

6-Ingredient Version (add one thing):

• Add 1 cup cooked, crumbled sausage or bacon
• Add 1 cup diced ham
• Add 1 cup sautéed vegetables (peppers, onions, spinach)

Different Cheese:

• Mexican blend for a Southwest flavor
• Swiss or Gruyere for something fancier
• Pepper jack if you want heat

Herb Addition:

• Add a teaspoon of dried herbs: Italian seasoning, oregano, or thyme

Make it Heartier:

• Use 10 eggs instead of 8 for a thicker casserole

---

What to Serve with This

This casserole is plain enough that it goes with anything:

• Fresh fruit
• Toast with butter and jam
• Sliced tomatoes
• Avocado slices
• Hot sauce or salsa
• Coffee

---

Frequently Asked Questions

Can I use egg whites instead of whole eggs?

You can use 2 cups of liquid egg whites (about 16 egg whites). The texture will be less rich but still works. Don’t use fewer than that or the casserole won’t set.

What if I don’t have milk?

Water works in a pinch. The casserole will be less creamy but still edible. Or use any dairy-free milk you have.

Can I make this ahead?

You can assemble it a few hours ahead and refrigerate before baking. Add 5-10 minutes to the bake time if it’s cold from the fridge. But this recipe is so fast there’s not much point in making it ahead.

Why is my casserole rubbery?

You either overbaked it or didn’t use enough milk. Pull it from the oven as soon as the center just barely sets. It continues cooking for a few minutes after you take it out.

Can I double this recipe?

Yes, use two 9×13 pans or one very large roasting pan. Double everything. Bake time stays roughly the same, but check the center with a thermometer to be sure.

Is this enough food for breakfast?

For six people? Yes, if you’re serving it with sides. If you’re feeding teenage boys or very hungry adults, consider it serves 4-5.

More Breakfast Recipes:

• 8 High Protein Breakfast Casseroles Perfect for Weekly Meal Prep
• Low Calorie Veggie Breakfast Bake (165 Calories)
• Classic High Protein Breakfast Casserole (30g Protein)
• Amish Breakfast Casserole