There are several different shades of meaning depending on the precise useage. "Estoy cocinando la cena" is literally "I am cooking dinner". It means that at the present time, I am engaged in the act of cooking. If you mean "I am cooking dinner tonight when you come over", it would be more like "Voy a cocinar la cena", or "yo cocino la cena esta noche". For "I am cooking dinner at the Christmas party this year", you could say "Cocinaré la cena a la fiesta de la Navidad este año".
camaron
dinner specials
camaron frito
cenar
Tengo cena
Cena
Cóctel de camarón.
Cena para diez
¿Cuantos para cenar?
¿Vamos a cenar?
Una cena sabatina
Puedo comer cena contigo?