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Overnight Sausage Casserole

Created by Linky on May 19, 2025

Step 1: Preheat oven to 400º F.
Step 2: Add the hash browns to a 8x8 inch dish. Spread them out evenly.
Step 3: Melt butter the microwave and pour over the hash browns. Mix it together so the potatoes get coated. Sprinkle with salt and pepper.
Step 4: Bake for 30-35 minutes, until the potatoes are almost cooked and some are starting to slightly brown. Remove from the oven. Lower the oven temperature to 350F.
Step 5: Meanwhile, finely chop up the peppers and onion.
Step 6: Add breakfast sausage and the veggies to a skillet set over medium high heat. Break up the sausage, if using bulk, and saute for 5-7 minutes, until the sausage is browned and onion is starting to soften.
Step 7: Add the cooked sausage mixture on top of the baked hash browns. Spread it out evenly, or just stir it in so everything is evenly distributed.
Step 8: Sprinkle cheese evenly on top of sausage layer.
Step 9: In a large bowl or stand mixer or hand-held immersion blender, stir together eggs, half and half, (or milk), seasoned salt, kosher salt, pepper, and dry mustard.
Step 10: Pour the egg mixture over the casserole, making sure to distribute evenly.
Step 11: Bake at 350 for for about 35-45 minutes, until the edges are browned and bubbly, and the center is almost firm.
Step 12: Take out of the oven and let set for 5 minutes before serving.