6 large ripe peaches, peeled and sliced (about 6 cups)
1/4 cup all-purpose flour
2 tablespoons light brown sugar
1 tablespoon lemon juice
1 tablespoon vanilla extract
2 tablespoons coconut rum, optional
1/2 cup all-purpose flour
1/3 cup packed brown sugar
3/4 teaspoon baking powder
1/2 teaspoon ground cinnamon
1/4 teaspoon baking soda
1/8 teaspoon salt
1/2 cup old-fashioned oats
1/4 cup butter, melted
Grease inner pot with 1 tablespoon softened butter. Toss peaches with flour, brown sugar, lemon juice, vanilla and, if desired, rum; spread evenly in inner pot.
Whisk together first 6 topping ingredients; stir in oats. Cut in butter until crumbly; sprinkle over peaches. Cover with glass lid. Press slow cook function; select vegetables setting. Press timer; set to 4 hours. Start.
Remove glass lid. Close air frying lid. Press air fry function; select custom setting. Press timer; set to 4 minutes. Start. Cook until topping is lightly browned. Serve warm.