If anyone was unaware of how much a I love all things breakfast – this casserole is sure to give you an idea! Breakfast casseroles are brilliant, especially when you can prep them the night before and simply pop them into the oven the next morning. It’s completely hassle free and the outcome is nothing less than delicious!This casserole is super handy for numerous reasons; a crowd to feed over the holidays, a kids sleepover, or just in general if you’re looking for something new and easy! It’s loaded with flavor, baked to perfection, and certainly going to please everyone and anyone who puts it in their mouth!

Ingredients

Bread – I used 12 slices of brioche bread – breads such as challah or egg bread will also work great, and a day old is preferred! Olive oil – For cooking purposes. Onion – 1 large onion, chopped and 3 green onions, also chopped. Italian sausage – Casings removed. Dry mustard – Any brand of dry mustard will work great! Salt and pepper – To taste. Bell pepper – I used a red bell pepper, finely chopped but you can use whichever color you prefer! Cheese – I used cheddar cheese today, shredded. Eggs – Because breakfast casserole guys! Milk – You can use whichever fat percentage you prefer.

How To Make Overnight Breakfast Casserole

What Else Can I Add To This Casserole?

You can go nuts on this list, you guys! Just think of breakfast, what it means to you, and what your favorite flavors are! Here’s some suggestions:

Mushrooms Potatoes Bacon Ham Pulled pork Jalapeño jack cheese Ground beef

How To Serve

Like I mentioned before, I am a breakfast connoisseur! There are so many things I would serve along side this casserole, and I don’t just mean the typical bacon, toast, maybe some hash browns – even though most of us love those things! I’m going all out with this dish! Here’s what I’m talking about!

Morning Glory Muffins Easy Waffle Recipe Mixed Fruit with Lemon-Basil Dressing Crescent Bacon Breakfast Ring Buttermilk Biscuits Blueberry Buttermilk Pancakes French Toast

How To Store Leftovers

Overnight breakfast casserole will last in the fridge for up to 4 days when properly sealed in an airtight container. To extend the shelf life of the breakfast casserole I recommend putting into the freezer. Stored properly in an airtight container, it will last anywhere from 3 – 6 months frozen!

Reheating

You can reheat this breakfast casserole a couple ways.

More Drool Worthy Breakfast Ideas Here:

Spinach Ricotta Brunch Bake Leftover Ham and Cheese Breakfast Muffins Easy Egg Muffins Healthy Whole Wheat and Oats Pumpkin Pancakes Banana Bread French Toast with Caramelized Bananas Sausage and Egg Breakfast Rolls Quiche Lorraine Cinnabons Cinnamon Rolls Amish Breakfast Casserole Overnight Breakfast Casserole - 87Overnight Breakfast Casserole - 38Overnight Breakfast Casserole - 87Overnight Breakfast Casserole - 46Overnight Breakfast Casserole - 32Overnight Breakfast Casserole - 67Overnight Breakfast Casserole - 41Overnight Breakfast Casserole - 39