To quickly peel peaches, fill the inner pot halfway with water. Set your Instant Pot to sauté on Normal. When the water is boiling, use tongs to dunk each peach in the water for 10 to 20 seconds or until the skin starts to split. Quickly plunge peach in a bowl of ice water. Use your fingers to peel the skin off the peaches. Reserve 1-1/2 cups water in the pot for step 3 and discard the remainder.
You can use 2-1/2 cups frozen sliced peaches, thawed, in place of fresh. Combine the peaches with 3 tbsp orange juice or water before adding them to the souffle dish.