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February 14, 2025

Everything But the Kitchen Sink Casserole

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Everything But the Kitchen Sink Casserole–an egg and sausage breakfast casserole with veggies. A healthy and delicious way to start your day.

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Everything But the Kitchen Sink Casserole

Everything But the Kitchen Sink Casserole

This is one of those recipes that you look in your fridge, freezer and pantry and add stuff in as you see fit. A random leek? Yes, add it in. Some frozen cauliflower? Yes, we need you too. A can of green chiles? Yeppers. This is a fun breakfast casserole that is low in carbs…I used cauliflower instead of typically used hashbrowns. It’s also gluten free and has a good amount of protein per serving as well as vegetables. Mix and match with items you have on hand at your house.

Ingredients/Substitution Ideas

  • Breakfast sausage–I used Jimmy Dean. You can also use seasoned ground turkey, cubed ham, etc.
  • Onion–or shallot
  • Leek–or 2 diced green onions
  • Garlic cloves
  • Spinach–or kale
  • Diced green chiles–I used mild. You can also dice up a bell pepper or poblano pepper.
  • Frozen cauliflower florets–or broccoli florets, or cubed hashbrown potatoes
  • Eggs
  • Kosher salt
  • Black pepper
  • Garlic powder
  • Dry mustard
  • Smoked paprika
  • Sharp cheddar cheese–or pepperjack, colby, monterey jack

Steps

Heat oven to 375° F.

Heat a pan over medium high heat. Add in the breakfast sausage and break it up. Add in the onion and leek. Brown for about 5 minutes. Add in the garlic cloves and stir for about 30 seconds. 

Stir in the spinach, green chiles, cauliflower and turn heat to low. 

Meanwhile in a bowl whisk together the eggs, salt, pepper, garlic powder, mustard and paprika. 

Turn the heat off of the pan. Stir the egg mixture and the cheese into the sausage mixture. 

Spray a pan with non-stick cooking spray. Pour the mixture into the pan. Bake for 30-40 minutes, or until eggs are firm (glass pans will take more towards 40 minutes and metal pans will be more towards the 30 minute side). 

Everything But the Kitchen Sink Casserole

Notes/Tips

  • Serve with a side of toast and orange juice.
  • I baked my casserole in a glass baking dish*.
  • If you want to add more protein to this dish try whisking in a cup of cottage cheese with the eggs.
  • Try adding in a half cup of bacon crumbles.
  • Store leftovers in an airtight container* in the refrigerator for up to 5 days or in the freezer for up to 3 months.
  • Other recipes you can make with leeks are Cheesy Potato and Leek Soup and Instant Pot Cock-A-Leekie Soup.
Did you know you can filter the recipes on my website to search by meat type, IP or Crockpot, low carb, gluten free, etc.? Use the filter to find exactly what you are looking for. 

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Everything But the Kitchen Sink Casserole
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Everything But the Kitchen Sink Casserole


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  • Author: 365 Days of Slow and Pressure Cooking
  • Prep Time: 20 minutes
  • Cook Time: 30-40 minutes
  • Total Time: 0 hours
  • Yield: 6–8 servings 1x
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Description

An egg and sausage breakfast casserole with veggies. A healthy and delicious way to start your day. 


Ingredients

Scale
  • 1/2 pound breakfast sausage
  • 1/2 cup diced onion
  • 1 leek, rinsed and sliced
  • 5 garlic cloves, minced
  • 2 cups chopped spinach
  • 1 (4 oz) can diced green chiles
  • 1 (12 oz) bag frozen cauliflower florets
  • 5 eggs
  • 1/2 tsp kosher salt
  • 1/2 tsp black pepper
  • 1/2 tsp garlic powder
  • 1/2 tsp dry mustard
  • 1/8 tsp smoked paprika
  • 1 cup shredded sharp cheddar cheese

Instructions

  1. Heat oven to 375° F.
  2. Heat a pan over medium high heat. Add in the breakfast sausage and break it up. Add in the onion and leek. Brown for about 5 minutes. Add in the garlic cloves and stir for about 30 seconds. 
  3. Stir in the spinach, green chiles, cauliflower and turn heat to low. 
  4. Meanwhile in a bowl whisk together the eggs, salt, pepper, garlic powder, mustard and paprika. 
  5. Turn the heat off of the pan. Stir the egg mixture and the cheese into the sausage mixture. 
  6. Spray a pan with non-stick cooking spray. Pour the mixture into the pan. Bake for 30-40 minutes, or until eggs are firm (glass pans will take more towards 40 minutes and metal pans will be more towards the 30 minute side). 

Notes

To slice a leek, first trim off the root end and the dark green top, then cut the leek in half lengthwise, and finally slice crosswise into thin rounds or half-moons depending on your desired cut; be sure to rinse thoroughly in cold water to remove any dirt trapped between the layers before slicing. 

  • Category: Breakfast
  • Method: Stove and Oven

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Everything But the Kitchen Sink Casserole

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*Karen Petersen is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com.

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Hi, I’m Karen. I know that dinner time can be less than relaxing. Busy schedules and cranky kids and a hundred other things can lead to weariness when it comes to putting dinner on the table. I can help! I make homemade, family-friendly slow cooker and Instant Pot dinners and share the recipes with you.

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