Streusel is a crumbly topping made of butter, flour, and sugar, often used on cakes, muffins, or fruit desserts.
Streusel can make people think of sweet, delicious baked goods.
Examples:
I love the streusel on this blueberry muffin.
The apple pie has a streusel topping.
She made a streusel cake for the party.
I wish I could eat just the streusel and leave the rest of the cake!
The streusel on this cake is as big as a mountain!
The streusel makes the cake taste even better.