Pre-heat the oven to 375°F.
Arrange the oven rack to the middle of the oven.
In an 8-inch cast-iron skillet, or an ovenproof pan, melt the butter over medium-high heat.
Sauté garlic until fragrant; 30 seconds.
Add the chicken and hot sauce; simmer until sauce has thickened and reduced by half; about 2 minutes.
Reduce the heat to low and stir in cream cheese; mix until combined.
Remove from the heat; stir through the sour cream and top with both cheeses over the top.
Place in the pre-heated oven and bake until bubbling around the edges and the cheese has melted; about 10 minutes.
Broil for a further minute to brown on top.
Garnish with blue cheese and green onions.
Serve with vegetable sticks, potato chips, crusty bread pieces, for dipping, optional.
