> "1080 recetas de Cocina"
Seconding this one. There was an English language edition put out. It might be out of print now, but Amazon US shows it:
https://www.amazon.com/1080-Recipes-Simone-Ortega/dp/0714848360/
I also like the Janet Mendel books like "Cooking in Spain"
1080 recipes from Simone Ortega is a classic and you'll find it on every Spanish home. It's basically what it says 1080 recipes. They go from cocido, to boiling eggs. It also has a substantial french influence.
Another possibility is the food of Spain from Claudia Roden. It's a radically different book but very awarded. In its 600 pages it explains both the recippes and it's history. It's the book I would buy.
You have plenty to choose from, but the first that comes to mind is 1080 recetas de cocina.
There's an English translation in Amazon: 1080 recipes.
How good is your Spanish? Because Amazon Spain has LOTS of recipe books classified by regions. I have no idea if any of them have been translated, though.