Preheat oven to 350 degrees F. Grease a 9x13 baking dish and set aside.
Melt butter in a large skillet over medium heat.
Add the frozen hashbrowns, and cook for 10 minutes, stirring occasionally to get crispy on all sides.
Remove the hashbrowns to the prepared baking dish.
In the same skillet add the ground sausage and cook over medium heat, breaking it up as it cooks. Cook while stirring, until meat is starting to brown. Add the bell pepper and onion to cook with the sausage.
Once sausage is browned and no longer pink and veggies are softened, add the garlic and cook an additional 30 seconds.
Spoon the sausage mixture on top of the hash browns in the baking dish. Add the grated cheddar cheese. Stir this all together until combined.
In a medium size mixing bowl add the eggs, milk, and heavy cream. Season with the seasoned salt, salt, and pepper. Whisk this together.
Pour this mixture over the top of hashbrowns in the baking dish.
Cover with foil and bake at 350 degrees F for 30 minutes.
Remove the foil and continue baking another 10 minutes.
Allow to cool briefly before slicing.
Top with fresh parsley and chives as desired for serving.