In a mixing bowl, combine warm water, sugar, and yeast. Let it sit for 10 minutes until frothy.

Add flour, salt, and olive oil to the yeast mixture. Mix until a dough forms.

Knead the dough on a floured surface for about 10 minutes until smooth.

Place the dough in a greased bowl, cover, and let it rise for 1 hour or until doubled in size.

In a separate bowl, mix rice flour, water, yeast, and salt until smooth. Let it rest for 30 minutes.

Preheat the oven to 375°F (190°C).

Shape the risen dough into a loaf and place it on a baking sheet.

Spread the crunch topping over the dough.

Bake for 25 minutes or until golden brown.