Begin by preheating your oven to 350 degrees Fahrenheit. In a large skillet over medium heat, cook your sausage. As it browns, use a wooden spoon to break it into small, uniform crumbles. The smell of searing meat and spices will surely bring the kids into the kitchen. Once cooked through, drain the excess fat. We want the flavor, not the grease.

In a large mixing bowl, crack your eggs. Whisk them vigorously until they are pale and frothy. Slowly pour in the milk, adding the dry mustard, salt, and black pepper. This is where the egg recipes foundation is built. If you want a more decadent finish, you can swap a half cup of milk for heavy cream.

Grease a 9x13 inch baking dish with butter. If you are making an easy sausage egg casserole with potatoes, lay your hash browns or potato cubes at the bottom. Follow with the browned sausage and a generous layer of cheddar cheese. I like to let Jana help with the cheese layer. It is her favorite part.

Carefully pour the egg mixture over the sausage and cheese. Use a fork to gently poke the ingredients, ensuring the liquid reaches every nook and cranny. This ensures a consistent casserole recipe texture throughout.

Place the dish in the center rack of your oven. Bake for 35 to 45 minutes. You will know it is ready when the edges are golden brown and the center is set. It should have a slight, tempting jiggle when moved. The sausage egg casserole will fill your home with an aroma that defines comfort.

This is the hardest part. Let the casserole sit for 5 to 10 minutes before slicing. This allows the proteins to firm up, making for clean, beautiful squares. Serve it warm, perhaps with a sprig of fresh herbs for color.