Preheat and prep: Heat your oven to 375°F (190°C).
Lightly grease a 9-inch baking dish or small cast-iron skillet.
Soften the base: In a mixing bowl, mash the cream cheese until smooth. This prevents lumps and helps everything blend.
Mix the flavor: Add buffalo sauce, ranch, garlic powder, onion powder, and a pinch of salt and pepper. Stir until creamy and uniform.
Add the chicken and cheese: Fold in the shredded chicken, cheddar, mozzarella, and most of the green onions.
Save a little cheese for topping.
Taste and adjust: Add more buffalo sauce for heat or more ranch for creaminess. Season with salt and pepper as needed.
Transfer and top: Spread the mixture into the baking dish. Sprinkle the remaining cheese on top and a little blue cheese if using.
Bake: Bake for 18–22 minutes, until hot and bubbling around the edges and the top is lightly golden.
Finish and serve: Garnish with the remaining green onions.
Let it rest 5 minutes, then serve warm with your favorite dippers.
Stovetop shortcut: For a faster version, warm everything in a skillet over medium-low heat, stirring until melted and hot, then top with cheese and cover for 2 minutes to melt.