eatvio-infra/database/seeders/RecipeAuthor.php

<?php

namespace Database\Seeders;

use App\Models\Recipe;
use App\Models\User;
use Illuminate\Database\Seeder;

class RecipeAuthor extends Seeder
{
    /**
     * Run the database seeds.
     */
    public function run(): void
    {
        if (User::count() > 0 && Recipe::count() > 0) {
            Recipe::each(function ($recipe) {
                User::inRandomOrder()
                    ->first()
                    ->author_of_recipe()
                    ->attach($recipe->id);
            });
        }
    }
}