In a large mixing bowl, beat the cream cheese with an electric mixer until smooth. Add the sour cream, sriracha, Worcestershire sauce, and garlic powder and mix until combines.
Fold in the crab meat, 1/2 cup white cheddar cheese, and Parmesan. Place dip in an oven proof shallow dish, top with remaining 1/2 cup cheese, and bake for 20-25 minutes or until bubbly.
Drizzle with sweet thai chili sauce, sprinkle on green onion, and serve with tortilla chips or wanton chips.
Wonton Chips:
Fill a large pot with 1/2 inch deep of oil. Turn heat to medium-high. Once the oil is hot and shimmers, add in 6-8 triangles being sure to not over lap them. Let them cook for about 20 seconds until lightly golden and then flip and cook another 10-20 seconds. Remove and place on a paper towel lined baking sheet. Immediately sprinkle with salt.