Step 1: Preheat and Prepare
Preheat Oven: Preheat your oven to 375°F (190°C). Grease a 9x13-inch baking dish.
Step 2: Mix the Filling
Combine Ingredients: In a large bowl, mix the shredded chicken, ranch seasoning, cream of chicken soup, sour cream, milk, 1 cup of shredded cheese, half of the crumbled bacon, garlic powder, onion powder, and black pepper.
Step 3: Assemble the Casserole
Layer the Mixture: Spread the chicken mixture evenly into the prepared baking dish.
Add Tater Tots: Arrange the frozen tater tots on top in a single layer.
Top with Cheese & Bacon: Sprinkle the remaining 1/2 cup of cheese and crumbled bacon over the tater tots.
Step 4: Bake
Bake the Casserole: Place the dish in the oven and bake for 40-45 minutes, or until the tater tots are crispy and golden brown.
Step 5: Serve
Garnish & Serve: Sprinkle with chopped green onions if desired, and serve hot.