Start by making the crumb topping. Into a medium-sized mixing bowl, add the flour, oats, kosher salt, cinnamon, and brown sugar. Mix with a spoon until combined.
Add the room temperature butter and work it into the mixture until just combined. We used our clean hands to do so but you can use a wooden spoon as well.
Drain the canned peaches from the liquids, slice them into thick slices and transfer them into a 9x9 baking dish.
Top the peaches with the crumb topping we used our hands to distribute the mixture evenly.
Bake in a 180c (350) preheated oven for about 25 minutes (depending on the oven) or until the oat topping is golden brown.
Serve this with a large scoop of vanilla ice cream or whipped cream!
Notes
Use room temperature ingredients. It is important that you use room-temperature ingredients like butter. This step ensures that your mixture mixes into a homogenous mixture and bakes perfectly.
Don’t overmix the batter, you don’t want to develop the gluten in the flour. This step ensures you have moist cookies and not dense and dry cookies.
Make sure that your butter is at room temperature. An hour or two before making this dessert, take the butter out of the fridge and let it come to room temperature. The butter should be soft to the touch. If your butter is too cold, it will be harder to mix and there will be lumps of butter in the mixture.
Measure your flour correctly! When measuring your flour, avoid scooping it with a measuring cup. Instead, stir the flour with a spoon to create as many air pockets as possible, and spoon it into your measuring cup. Finally, level it with a back of a knife.
Before you start to make this recipe, measure and prepare your ingredients so the cooking process will go smoothly and easily.