1. Melt butter in a large skillet over medium-high heat. Add onion to pan, and sauté for 4 minutes, stirring occasionally. Add ginger and garlic; sauté 1 minute, stirring constantly. Add potato and next 4 ingredients (through pepper); sauté 1 minute, stirring constantly. Stir in tomatoes and broth; bring to a boil. Cover and cook for 5 minutes.
2. Stir in coconut milk and peas; bring to a simmer. Cook, uncovered, 12 minutes or until squash is tender, stirring occasionally. Sprinkle with green onions.