Heat the oil in a skillet over medium-high heat. Add the onion and bell peppers and cook for 2 to 3 minutes. Add the sausage and mix to combine. Take off the heat and set aside.
In a large bowl, whisk together the eggs, milk, and spices.
Grease a 4 quart slow cooker. Place half the shredded sweet potatoes, onion mix, spinach, and cheese in the slow cooker. Repeat the layers once more. Pour the egg mixture on top. Cook on low for 7 to 8 hours or high for 3 to 4 hours.
Serve with sliced avocado or toppings of choice.
Notes
**Please choose all organic ingredients if possible**
Recipe by Food Babe at https://foodbabe.com/sweet-potato-sausage-breakfast-casserole-in-the-slow-cooker-easy-prep-to-feed-a-crowd/