Cheesy Grit Casserole

Ingredients

• 1 pound mild or spicy bulk pork sausage
• 1 small onion, chopped
• 4 cups water
• 1/2 teaspoon salt
• 1 cup quick-cooking grits
• 3 (4-ounce) cans chopped green chiles
• 1 1/2 cups sharp cheddar cheese, shredded, divided
• 1 1/2 cups Monterey Jack cheese, shredded, divided
• 2 tablespoons butter
• 1/4 teaspoon hot pepper sauce
• 2 large eggs, lightly beaten
• 1/4 teaspoon paprika
• fresh cilantro, optional, to taste, chopped, for garnish