I am a crumble convert.
I’m used to making double-crusted pies, which involve a warm fruit filling sandwiched between two buttery crusts. Crust is my favorite part of pie, so it just makes sense.
But streusel topping is my favorite part of fruit crumbles and crisps. (Not to be confused with buckles, grunts, slumps, and other fruit desserts that sound unattractive.)