Heat oil in a 10-inch cast iron skillet or a large saucepan set over medium heat. Add garlic to the hot oil and cook for 15 seconds or until fragrant.
Add the cubed cream cheese, buffalo sauce, and ranch dressing; decrease heat to medium-low and cook for 8 to 10 minutes, or until mixture is smooth and cream cheese is completely melted and creamy. Whisk frequently.
Add shredded chicken and cheddar cheese to the saucepan; mix and stir until well combined. Continue to cook until heated through and cheese is melted.
Remove from heat. Garnish the dip with blue cheese crumbles and parsley.
Serve with celery sticks, crackers, tortilla chips, veggies, etc...
Notes
For an extra spicy kick, add more buffalo sauce to taste. Serve warm and enjoy with your favorite dippers!