Cook the sausage in a skillet over medium heat until completely cooked through. Drain any excess grease.
Whisk together the eggs, heavy cream, and salt in a mixing bowl.
Pour the egg mixture into a 9x13-inch casserole dish.
Sprinkle the cooked sausage evenly over the egg mixture.
Sprinkle the shredded cheddar cheese evenly over the top.
Bake uncovered for 30–40 minutes, or until the casserole is set in the center.
Allow to cool briefly before slicing and serving.
Notes
Make-Ahead Instructions
Assemble the casserole the night before, cover with plastic wrap, and refrigerate.In the morning, remove the plastic wrap and place the casserole in the cold oven. Set the oven to 350°F and bake for 30–40 minutes, or until set in the center. Because the casserole is cold, it may need closer to 40 minutes.
Notes
Pork or turkey breakfast sausage can be used.For extra flavor, add bell peppers, onions, mushrooms, spinach, green chiles, or jalapeños.Half-and-half can be substituted for the heavy cream.