Streusel

Streusel is a German word that means to sprinkle to 'strew'. The crumbly mixture combines sugar, flour, butter and s,sometime spices then it is sprinkled atop desserts like coffee cake, pies, fruit crisps or muffins.  A  typical ratio of sugar, butter, and flour for German Streusel is 1 part sugar, 1 part butter and 2 parts flour.

Some Streusel Recipes

Cinnamon Streusel Coffee Cake - Recipe uses a German style streusel to top a warm coffee cake.
Crumb Topping Recipe - Recipe uses flour, brown sugar, granulated sugar, butter and cinnamon.  Use as a topping for pies.
Strawberry Almond Streusel Cake - Fresh strawberries and blood oranges topped with a spiced streusel topping.

If you don't like the consistency of German Streusel you can use a crumb topping instead which is less crumbly and more "sandy". See recipe links.