This is an irregular verb. It follows the conjugation pattern of the verb pensar.
PresentPresente
Te recomiendo el restaurante nuevo de la esquina.
I recommend the new restaurant on the corner.
PreteritePretérito indefinido
María nos recomendó un hotel barato en Sevilla.
María recommended a cheap hotel in Seville to us.
FutureFuturo
El médico te recomendará más descanso.
The doctor will recommend more rest for you.