The phrase "has in" in this context is not a phrasal verb. Instead, it indicates possession or availability. Here, it means "the average family possesses or has available options in beef, fish, poultry, and vegetarian recipes."
So the sentence means:
"Despite the variety that the average family has available in terms of beef, fish, poultry, and vegetarian recipes, they find most meals unexciting."
In simpler terms, it means that even though families have a wide range of meal options, they still find their meals boring.