The 22-year-old admitted he did not expect to appear for the senior side so early in his career and is eager to cement his place following la Roja's 2-1 friendly victory
Goals from Santi Cazorla and Juanfran either side of a Jimmy Bermudez strike ensured Bartra enjoyed a victory on his first senior appearance for la Roja.
The 22-year-old, drafted into the squad following injuries to Cesc Fabregas and Diego Costa, admitted he was surprised to make his debut so early in his career and thanked the coach for granting the opportunity to young players.
"I'm grateful to Del Bosque for having confidence in us and believing in the younger players. And I think that confidence gets results, which is the most important thing," he told reporters after the match.
"I'm delighted with my debut and we won. The atmosphere, my team-mates, starting, everything. It's like a dream come true and I think there will be many more times like this in the future.
"It's true that I always dreamed of playing for la Roja, but realistically I saw it in the future. I had a difficult time but I knew that with perseverance, good things would come and I needed to be prepared. And good things have come, that's why I'm happy."
Spain are now preparing for their friendly match against South Africa on November 19.