Spray the inside of your slow cooker with non-stick spray to prevent sticking.
Divide your cheese: Cube 2/3 of it and grate the remaining 1/3 for topping later.
In a large mixing bowl, whisk together the eggs, ricotta, salt, pepper, thyme, and dill until mostly smooth—small chunks of ricotta are fine.
Layer the cubed cheese, cooked beef bacon, and diced beef inside the slow cooker.
Give the egg mixture one more whisk to ensure it’s well-blended, then pour it over the ingredients in the slow cooker.
Cover with the lid and set your slow cooker to HIGH. Cook for 2 hours and 30 minutes.
If you notice any liquid on top of the casserole, gently blot it with a paper towel before proceeding.
Sprinkle the reserved grated cheese over the casserole, cover, and cook for an additional 5-10 minutes until melted and gooey.
Scoop out servings and top each one with a slice of fresh tomato for a burst of brightness. Enjoy!