Soften cream cheese in the microwave for about 30 seconds.
In a large bowl, combine cream cheese, crabmeat, green onions, powdered sugar, Worcestershire sauce, garlic powder, lemon juice, and sour cream. Mix well.
Transfer the mixture to an oven-safe casserole dish.
Bake for 30 minutes, or until the dip is hot and bubbly.
While the dip bakes, cut wonton wrappers in half diagonally, spray lightly with vegetable oil, and arrange in a single layer on a baking sheet.
After removing the dip, increase oven temperature to 375°F (190°C).
Bake wonton chips for 4–6 minutes, or until golden brown, watching closely to prevent burning.
Let chips cool on a plate lined with paper towels.
Serve the dip warm with the crispy wonton chips.
Notes
For a lighter version, use reduced-fat cream cheese and sour cream.
The dip can be served with pita chips, vegetables, or crackers if preferred.
Make sure to drain the crabmeat well to avoid a watery dip.