A casserole is the perfect time-saver dish. It can provide plenty of “cook once, eat twice, or more!” leftovers, or it can satisfy a hungry crowd. Whatever the case in your home, you’ll love the ease of preparation with this keto sausage breakfast casserole.
Be sure to select sausage that is all-natural with no added sugar or fillers. Jimmy Dean brand makes a certified gluten-free, no sugar added sausage with none of those chemical additives most of us like to avoid. This type of sausage does not have a lot of excess fat/liquid to drain away, so you can brown the sausage and cook the veggies in the same pan. That makes cleanup much easier!
The consistency of this finished dish is on the custard side, with a rich cheddar sauce and just a hint of heat from ground cayenne pepper. If you aren’t a fan of the spice, simply omit it but it adds a nice balance to the dish.
Feel free to change up the type of cheese you use from time to time. In place of cheddar you can substitute Monterrey Jack, Swiss, or even smoked Gouda.
Whatever you decide, in under an hour you can have a bubbling dish on the table that will keep you satisfied for hours.
Yields 6 servings of Keto Sausage Breakfast Casserole
The Preparation
- 16 ounces pork sausage
- 2 cups green cabbage, shredded
- 2 cups zucchini, diced
- 1/2 cup onion, diced
- 3 large egg
- 1/2 cup mayonnaise
- 2 teaspoons yellow mustard
- 1 teaspoon dried sage
- 1/4 teaspoon cayenne pepper
- 1 1/2 cups cheddar cheese, shredded
The Execution
1. Preheat oven to 375F. Brown the sausage in a large skillet over medium heat until almost cooked through.

2. Add the cabbage, zucchini, and onion, cooking until the vegetables are tender and the sausage is fully cooked. Pour the mixture into a greased casserole dish.

3. In a mixing bowl, whisk the eggs, mayonnaise, mustard, sage, and cayenne pepper until smooth.

4. Add two-thirds of the shredded cheese to the egg mixture and stir.

5. Pour this mixture over the sausage and vegetables in the casserole dish.

6. Top the casserole with the remaining shredded cheese. Bake for 30 minutes, or until the casserole is bubbling around the edges and the cheese is melted and beginning to brown.

7. Remove from the oven and serve hot.

This makes a total of 6 servings of Keto Sausage Breakfast Casserole. Each serving comes out to be 555 calories, 47.3g fats, 5.6g net carbs, and 25.8g protein.
| NUTRITION | CALORIES | FAT | CARBS | FIBER | NET CARBS | PROTEIN |
| 16 ounce pork sausage | 1474 | 123.6 | 6.4 | 0 | 6.4 | 84.1 |
| 2 cup green cabbage | 45 | 0.1 | 10.4 | 4.5 | 5.9 | 2.3 |
| 2 cup zucchini | 63 | 1.5 | 11.3 | 4.2 | 7.1 | 4.8 |
| 1/2 cup onion | 32 | 0.1 | 7.5 | 1.4 | 6.1 | 1.1 |
| 3 large egg | 236 | 15.7 | 1.2 | 0 | 1.2 | 20.7 |
| 1/2 cup mayonnaise | 748 | 82.3 | 0.6 | 0 | 0.6 | 1.1 |
| 2 teaspoon yellow mustard | 6 | 0.4 | 0.6 | 0.4 | 0.2 | 0.4 |
| 1 teaspoon dried sage | 2 | 0.1 | 0.4 | 0.3 | 0.1 | 0.1 |
| 1/4 teaspoon cayenne pepper | 1 | 0.1 | 0.3 | 0.1 | 0.1 | 0.1 |
| 1 1/2 cup cheddar cheese | 742 | 61.2 | 5.7 | 0 | 5.7 | 42 |
| Totals | 3350 | 285.1 | 44.4 | 10.9 | 33.6 | 156.5 |
| Per Serving (/6) | 558 | 47.5 | 7.4 | 1.8 | 5.6 | 26.1 |

Keto Sausage Breakfast Casserole
Ingredients
- 16 ounce pork sausage
- 2 cup green cabbage shredded
- 2 cup zucchini diced
- ½ cup onion diced
- 3 large egg
- ½ cup mayonnaise
- 2 teaspoon yellow mustard
- 1 teaspoon dried sage
- ¼ teaspoon cayenne pepper
- 1 ½ cup cheddar cheese shredded
Instructions
- Preheat oven to 375F. Brown the sausage in a large skillet over medium heat until almost cooked through.
- Add the cabbage, zucchini, and onion, cooking until the vegetables are tender and the sausage is fully cooked. Pour the mixture into a greased casserole dish.
- In a mixing bowl, whisk the eggs, mayonnaise, mustard, sage, and cayenne pepper until smooth.
- Add two-thirds of the shredded cheese to the egg mixture and stir.
- Pour this mixture over the sausage and vegetables in the casserole dish.
- Top the casserole with the remaining shredded cheese. Bake for 30 minutes, or until the casserole is bubbling around the edges and the cheese is melted and beginning to brown.
- Remove from the oven and serve hot.


