Step 1: Gather Your Ingredients - Start by gathering all your ingredients. You’ll need 1 cup of all-purpose flour, 1 cup + 2 tablespoons of lightly packed brown sugar, 4 tablespoons of unsalted butter cut into 1-inch cubes and softened to room temperature, and a pinch of salt.
Step 2: Combine the Dry Ingredients - In a large mixing bowl, combine the all-purpose flour, brown sugar, and a pinch of salt. Mix them together until well blended.
Step 3: Add the Butter - Add the softened butter cubes to the dry mixture. Using a pastry cutter or a fork, work the butter into the flour and sugar mixture until it resembles coarse crumbs. This should take about 2-3 minutes.
Step 4: Adjust the Texture - If you prefer a chunkier streusel, leave some larger clumps. If you like a finer texture, continue to mix until it’s more uniform.
Step 5: Store or Use Immediately - At this point, you can either use your streusel topping immediately on your favorite baked goods or store it in an airtight container in the refrigerator for up to a week.