Whisk together flour, sugar, cinnamon, and salt in a medium bowl until well-combined.
Stir in melted butter. Mix well, then press gently on the mixture to form large clumps.
Set the topping aside for about 10 minutes.
Crumble the topping over the recipe of your choice. Follow recipe instructions for baking times and temps (see notes below). Enjoy!
Notes
How to Use: This recipe is super versatile and can be used to top everything from fruit crumbles to muffins, pies, quick breads, and more! For best results, follow the recipe directions for whatever you are baking, as cooking times will vary.Make a Crumble with Any Fruit: Make this topping recipe first. Then combine five to seven cups of fresh fruit (such as peaches, rhubarb, apples, berries, etc., or a combination) with ½ to 1 cups sugar (depending on how sweet the fruit is), 1 tablespoon lemon juice, and a tablespoon (or two) of flour or cornstarch. Transfer the fruit mixture to a buttered 8 x 8-inch baking dish, then crumble the topping over it. Bake at 350 degrees for about 45 to 50 minutes.More Tips: Check out the info before this recipe card with helpful tips, photos, additional ideas for using the topping, related recipes, and more!