9-Panel Cookie Baking Tutorial Grid

{
  "type": "Step-by-step photo tutorial grid",
  "subject": "{argument name=\"recipe subject\" default=\"Butter Cookies\"}",
  "style": "A bird's-eye view of food photography, bright natural light, simple and beautiful.",
  "background": "{argument name=\"background surface\" default=\"White marble countertop\"}",
  "layout": {
    "grid": "3x3",
    "panel_count": 9,
    "panels": [
      {
        "step": 1,
        "image_description": "In a clear glass bowl, whisk together the butter and sugar.",
        "text_overlay": "1. Soften butter at room temperature, add sugar and beat until fluffy and pale."
      },
      {
        "step": 2,
        "image_description": "Add the raw egg yolks to the butter mixture, and place the whisk in a bowl.",
        "text_overlay": "2. Add the eggs one at a time, mixing well after each addition before adding the next."
      },
      {
        "step": 3,
        "image_description": "Add dark vanilla extract to the mixture",
        "text_overlay": "3. Add vanilla extract and stir well."
      },
      {
        "step": 4,
        "image_description": "Sift the flour through a metal sieve into a glass bowl.",
        "text_overlay": "4. Sift the cake flour, add salt, and mix well."
      },
      {
        "step": 5,
        "image_description": "Stir the crumbly dough with a spatula",
        "text_overlay": "5. Mix until a dough with no dry flour remains."
      },
      {
        "step": 6,
        "image_description": "A smooth dough ball tightly wrapped in transparent plastic wrap",
        "text_overlay": "6. Cover with plastic wrap and refrigerate for 30 minutes."
      },
      {
        "step": 7,
        "image_description": "Use metal cookie cutters to cut out star and fan-shaped circles from the rolled-out dough.",
        "text_overlay": "7. Roll out to about 0.5cm thickness, and use a cookie cutter to cut out shapes."
      },
      {
        "step": 8,
        "image_description": "The raw cookie dough is neatly arranged on a baking sheet lined with parchment paper.",
        "text_overlay": "8. Place in a baking pan and preheat oven to 180°C."
      },
      {
        "step": 9,
        "image_description": "The finished golden-yellow cookies are piled on a white lace-rimmed plate, with some dried lavender in the corner.",
        "text_overlay": "{argument name=\"final step text\" default=\"9. Bake for 12-15 minutes, or until the surface is lightly golden brown.\"}"
      }
    ]
  }
}