It would definitely be better to wait for the answer from specialists of this field, but I who have some acquaintances in Medieval Iberian History would recommend the following ones:

• Catlos, Brian A. Kingdoms of Faith: A New History of Islamic Spain. New York: Basic Books, 2018: Catlos is a very prolific scholar whose specialty is the relationship between the Christians and Muslims in Catalonia and Aragon. Parallel of this work, Muslims of Medieval Latin Christendom, c.1050–1614. Cambridge: Cambridge UP, 2014 also enjoys a good reputation.
• Constable, Olivia Remie (ed.), with Damian Zurro. Medieval Iberia: Readings from Christian, Muslim, and Jewish Sources. 2nd ed. Philadelphia: U of Penn P, 2012: This is a collection of primary source texts from Medieval Iberia. Especially if you cannot read Arabic, this would be a very helpful introduction for what kind of written sources (and in which language) are available in Medieval Iberian Peninsula.
• Menocal, Maria Rosa. The Ornament of the World: How Muslims, Jews, and Christians Created a Culture of Tolerance in Medieval Spain. New York: Back Bay Books, 2002: Very highly readable classic by a cultural historian, mainly covering ca. 800 to ca. 1300, transitional period to al-Andalus to Christian kingdoms in Iberian Peninsula, though a bit too idealised representation of the convivencia of three religions.

[Added]: forgot to mention the tree of comments with the author list of /u/etherizedonatable, /u/drylaw, and /u/Hergrim in this reading recommendation thread.