MELT butter in large saucepan over medium-high heat. Add onion and garlic; cook, stirring frequently, for 2 to 3 minutes or until tender. Stir in curry powder, salt and pepper; cook for 1 minute.
ADD broth and pumpkin; bring to a boil. Reduce heat to low; cook, stirring occasionally, for 15 to 20 minutes. Stir in evaporated milk. Transfer mixture to food processor or blender (in batches, if necessary); cover. Blend until smooth. Serve warm.