Prep Your Oven and Pan: Preheat your oven to 400°F / 200°C. Generously butter an 8x8-inch (20x20 cm) baking pan or a similar shallow baking dish.
Mix the Fruit Filling: Peel, core, and slice the pears into bite-sized pieces.
In a medium bowl, combine the pear slices and diced apricots.
Sprinkle the flour over the fruit and toss gently to coat everything evenly.
Drizzle in the honey and toss again until the fruit is well-coated.
Assemble the Base: Scrape the pear and apricot mixture into your prepared baking pan, spreading it into an even layer.
Make the Crumble Topping: In the same bowl (no need to wash it!) , combine the rolled oats, flour, cinnamon, and brown sugar.
Mix well.
Add the bits of cold butter and use your fingertips to rub them into the dry until the mixture resembles coarse, sandy crumbs.
Stir in the chopped walnuts.
Top and Bake: Sprinkle the crumble topping evenly over the fruit layer in the pan.
Bake for 30 to 40 minutes, or until the fruit filling is bubbly and tender, and the topping is a beautiful golden brown.
Cool and Serve: Let the crisp cool for at least 10 minutes before serving. It's wonderful served warm, either on its own or with a dollop of lightly sweetened whipped cream or a scoop of vanilla ice cream.
Don't Overmix the Topping: When cutting in the butter, stop when you have pea-sized crumbles. Overmixing can create a paste-like texture instead of a light, crispy topping.
Check for Doneness: The crisp is ready when the topping is golden brown and you can see the fruit juices bubbling up around the edges of the pan.