Tecnically, there are two nouns in the sentence: You love blueberry pie; Them being You and pie. The subject is you, the verb is love, blueberry is an adjective describing pie, and pie is the indirect object (not completely sure about pie... it could be the direct object instead)
Blueberry and apple pie mixed
Blueberry pie
What is a blueberry pie recipe?
I think that the Blueberry pie is much more tasty
They would be a Blueberry flavored pie.
Because the chef added it to enhance the taste.
Some compound words using 'pie' are magpie, piebald, potpie, and porkpie hat.
blueberry strawberry red berry
berry parfait, blueberry tarts, blueberry pie, and berry turnovers
blueberry pie
In the book "Pie" by Sarah Weeks, Polly Portman won three blueberry medals for her blueberry pies.