This warm brown butter apple crisp with chopped walnuts is the perfect thing to serve for a fall dessert. Serve this warm with cold vanilla ice cream for the best sweet, savory, cold and warm combination.
Start by preheating your oven to 350ºF and prepping the dry ingredients for the topping. In a medium size bowl mix together the flour, oats, brown sugar, chopped walnuts, and pinch of salt.
Cube up butter. In a small saucepan, set over medium heat, add the cubed butter. Once it’s melted, it will begin to foam up and bubble a bit. Allow it to cook until you begin to see lightly browned specks beginning to form. Give it a stir and cook until it’s browned.
Pour the browned butter and all the brown bits at the bottom of the pan over the dry ingredients and stir together until everything is combined and slightly crumbly. Set aside.
To Make the Filling:
Peel, core and slice the apples into 1/4" slices and add to a bowl. Toss the apple slices with the brown sugar, flour, cinnamon, allspice, and salt until all the apple slices are evenly coated.
Spray a 2 quart baking dish (or an 8" square baking dish works perfectly). Add all the apples and any juices and evenly level them in the dish. Crumble up the crisp topping and add it evenly over the top, it's going to seem like way too much and but's ok; it'll cook down in the oven.
Place the baking dish on a parchment lined baking just in case anything bubbles over and bake in the preheated oven for 55-65 minutes, until the top is golden brown and the filling is bubbly.