The 26-year-old frontman joined Everton for £27m in January, but is yet to find the net following two appearances for Sam Allardyce's side in the Premier League.
"We didn't go to Dubai for sun and relaxation," Tosun told the club's official website. "We trained hard, with sessions on the grass followed by gym sessions and then recuperation in the late afternoons. The temperatures were hot and we worked hard each day.
"Team-bonding is very important and getting to know your teammates as the people they are, as individuals.
"Spending every day around the guys means that we know one another better now. I've settled in very well, I really believe that. But the training camp in Dubai was perfect to help me adapt even further to my new surroundings, my new club, a new league.
"We had a lot of fun along with the serious work and I hope it will help me on the pitch for the next games. I believe it will."
Everton currently hold ninth position in the league standings with 34 points from 27 games.