Instant Pot Snickers Cheesecake

For crust:

• 1 ¼ cup Oreo cookies whole, crushed
• 2 TBS butter unsalted

For filling:

• 16 ounces cream cheese softened
• ⅔ cups granulated sugar
• 2 large egg
• ¼ cup sour cream or nonfat plain Greek yogurt
• 1 cup Snickers candy bars chopped

For ganache topping:

• ½ cup heavy cream
• ¾ cups milk chocolate chips (about 4 ounces)

For additional topping

• ¾ cups Snickers bar chopped
• ¼ cup caramel sauce