Spiced Spaghetti Squash Cake

Ingredients

• 1 spaghetti squash, halved lengthwise and seeds removed
• 1 cup all-purpose flour
• 1 teaspoon baking soda
• 2 teaspoons five-spice powder
• 1/4 teaspoon salt
• 2 eggs
• 1 cup brown sugar
• 1/3 cup plain Greek yogurt
• 1/4 cup safflower oil
• 4 ounces cream cheese, at room temperature
• 1/4 cup unsalted butter, at room temperature
• 1/4 cup powdered sugar
• Splash of milk, as needed