1-Preheat the oven to 350°F if using a regular oven, and butter a baking dish large enough to hold the peaches. If using an air fryer, skip to the next step.

2-Use a melon baller to scoop out and discard the red flesh from the center of each peach, creating a cavity to hold the streusel while leaving enough flesh for stability.

3-In a bowl, combine 2 tablespoons all-purpose flour, 3 tablespoons brown sugar, 1 tablespoon granulated sugar, 1/8 teaspoon cinnamon, 1/8 teaspoon salt, 2-3 tablespoons chopped pecans (if using), and 1/4 cup oats.

4-Add 2 tablespoons chilled butter (cut into small pieces) and mix with your fingers or a stand mixer paddle until the mixture is crumbly with pea-sized bits.

5-Divide the streusel filling among the peach cavities, packing it in.

6-For the air fryer method, place the peaches cut side up in the basket and cook at 350°F for 5-15 minutes, checking after 5 minutes until lightly browned and soft but still holding shape.

7-For the oven method, place the peaches cut side up in the baking dish and bake at 350°F for 35-45 minutes, until the topping is lightly browned and the peaches are softened but stable.

8-Let the peaches cool slightly before serving warm, topped with vanilla ice cream.