One input and output to both the receiver and the change address of my wallet.
Not really but you are close. The amount of inputs is related to the amount of coins you want to spend; not to the number of recipients. If you had two UTXOs - 0.1 BTC each and wanted to sent 0.15 BTC, you would use up 2 inputs and have 2 outputs. However, If you sent 0.05 BTC, you would use up 1 input and still have 2 outputs because of 0.05 BTC change.