Step 1

Cut the peach in half and remove the stone. Slice then place the slices in the bottom of a mug, ramekin, or other individual-sized dish with a volume of at least 10oz/300ml (1⅓ cups). Be sure to use one suitable for your preferred cooking method, i.e. it should be oven-safe if baking in the oven or microwave-safe if microwaving.

Step 2

Add all of the other ingredients to a small bowl. Use the tips of your fingers to combine and rub the butter into the flour until it looks like coarse bread crumbs (see my photograph in the post above or watch my video). Sprinkle the crumble topping over the peaches.

Step 3

Microwave for 1 minute 40 seconds, air fry at 350°F for 10 to 12 minutes, or oven-bake at 400°F for 15 minutes. If using frozen peaches add an extra 10 seconds in the microwave, an extra 3 minutes in the oven or an extra 2 minutes in an air fryer.