The 20-year-old was called on at half-time against Everton after an Achilles tendon injury to Thomas Sorensen.
Butland said: "Shortly before half-time Andy Quy, the goalkeeping coach told me to make sure I was ready. Hopefully Tommy's all right and it's not too bad.
"It was a brilliant experience, fantastic to make my Stoke debut and first appearance in the Premier League as well, it's just unfortunate we couldn't seal it with a win.
"It was a grind at the end and the lads did well to keep them out for as long as we did.
"Unfortunately it was a penalty. It would have been the icing on the cake if I'd saved it so it was disappointing in the end but, overall, I was really pleased with the day."
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