CHEESY SAUSAGE AND EGG KETO CASSEROLE

Steps:

• Preheat the oven to 350 degrees F (175 degrees C).
• Place sausage links in a skillet and cover with cold water. Cook over medium-high heat just until water reaches a gentle simmer, 6 to 8 minutes. Remove sausages to a plate, drain the skillet, and add 1 tablespoon oil. Heat oil over medium-high heat. Add sausages and cook until browned on all sides, 2 to 3 minutes. An instant-read thermometer inserted into the center should read 160 degrees F (70 degrees C). Remove sausages, allow to cool, and slice into 1/2-inch slices. Transfer to a large bowl.
• Heat remaining 2 tablespoons olive oil in the skillet over medium heat. Add celery and onion and cook until onion is soft and translucent, about 5 minutes. Transfer to the bowl with the sausage. Add diced tomatoes, eggs, spinach, parsley, bouillon, garlic salt seasoning, black pepper, crushed pepper, and all-purpose seasoning. Mix until combined and transfer to a 9x13-inch glass baking dish. Sprinkle Cheddar cheese generously over the top.
• Bake in the preheated oven until cheese is melted and lightly browned, 25 to 30 minutes.
• Set an oven rack about 6 inches from the heat source and preheat the oven's broiler. Broil casserole for an additional 5 minutes until cheese is crispy.