Green Beans and Potatoes

Bahan-bahan (4 porsi)

• 12 ounces potatoes (any variety)
• ½ teaspoon salt
• 1 tablespoon olive oil
• ½ medium yellow onion (diced)
• 8 ounces green beans (cut into 1-inch pieces)
• 1 teaspoon garlic powder
• 1 teaspoon seasoned salt
• ½ teaspoon black pepper
• 1½ tablespoons salted butter