Create Foreign Key Relationship in ASP.net MVC Entity Framework Code First

Your relationships are correct. For more improvement i would suggest plural name for your ICollection means Recipes instead of Recipe and replace List with ICollection.

public class RecipeCategory
{
    public int RecipeCategoryID { get; set; }
    public string Name { get; set; }
    public ICollection<Recipe> Recipes { get; set; }
}

public class Recipe
{
    public int ID { get; set; }
    public string Title { get; set; }
    public string  Description { get; set; }

    public int RecipeCategoryID { get; set; }
    public RecipeCategory RecipeCategory { get; set; }
}

Now come to main point as you have said you are unable to get RecipeCategories so can you please post your code for this which you are using?

It should be like this: 1. You must have created a context class inherited from DbContext and in that you must have defined your both entities in DbSets.

public class YourContext: DbContext
{
    public YourContext():
        base("yourConnectionString")
    {
    }

    public DbSet<Recipe> Recipes { get; set; }
    public DbSet<RecipeCategory> RecipeCategories { get; set; }
}

after that you can return your categories like this:

public IEnumerable<RecipeCategory> Get()
{
    YourContext context = new YourContext();
    return context.RecipeCategories;
}