recipe schema

{
  "@context": "https://schema.org/",
  "@type": "Recipe",
  "name": "Party Coffee Cake",
  "image": [
  "https://example.com/photos/1x1/photo.jpg",
  "https://example.com/photos/4x3/photo.jpg",
  "https://example.com/photos/16x9/photo.jpg"
  ],
  "author": {
  	"@type": "Person",
    "name": "Mary"
  },
  "datePublished": "2019-03-10",
  "description": "This coffee cake is awesome and perfect for parties.",
  "prepTime": "PT20M",
  "cookTime": "PT30M",
  "totalTime": "PT50M",
  "keywords": "cake for a party, coffee",
  "recipeYield": "10 servings",
  "recipeCategory": "Dessert",
  "recipeCuisine": "American",
  "nutrition": {
    "@type": "NutritionInformation",
    "calories": "270 calories"
  },
  "recipeIngredient": [
    "2 cups of flour",
    "3/4 cup white sugar",
    "2 teaspoons baking powder",
    "1/2 teaspoon salt",
    "1/2 cup butter",
    "2 eggs",
    "3/4 cup milk"
    ],
  "recipeInstructions": [
    {
      "@type": "HowToStep",
      "text": "Preheat the oven to 350 degrees F. Grease and flour a 9x9 inch pan."
    },
    {
      "@type": "HowToStep",
      "text": "In a large bowl, combine flour, sugar, baking powder, and salt."
    },
    {
      "@type": "HowToStep",
      "text": "Mix in the butter, eggs, and milk."
    },
    {
      "@type": "HowToStep",
      "text": "Spread into the prepared pan."
    },
    {
      "@type": "HowToStep",
      "text": "Bake for 30 to 35 minutes, or until firm."
    },
    {
      "@type": "HowToStep",
      "text": "Allow to cool."
    }
  ],
  "aggregateRating": {
    "@type": "AggregateRating",
    "ratingValue": "5",
    "ratingCount": "18"
  },
  "video": [
    {
    "@type": "VideoObject",
    "name": "How to make a Party Coffee Cake",
    "description": "This is how you make a Party Coffee Cake.",
    "thumbnailUrl": [
      "https://example.com/photos/1x1/photo.jpg",
      "https://example.com/photos/4x3/photo.jpg",
      "https://example.com/photos/16x9/photo.jpg"
     ],
    "contentUrl": "http://www.example.com/video123.mp4",
    "embedUrl": "http://www.example.com/videoplayer?video=123",
    "uploadDate": "2018-02-05T08:00:00+08:00",
    "duration": "PT1M33S",
    "interactionCount": "2347",
    "expires": "2019-02-05T08:00:00+08:00"
   }
  ]
}