In a bowl, combine warm water, sugar, and yeast. Let it sit for 5–10 minutes until foamy.
Add flour, yogurt, salt, and oil. Mix until a soft dough forms.
Knead the dough for 8–10 minutes until smooth and elastic.
Place the dough in a greased bowl, cover, and let it rise for 1–2 hours until doubled in size.
Divide the dough into equal portions and shape each piece into a ball.
Roll each ball into an oval or round shape.
Sprinkle minced garlic and chopped coriander over the dough and gently press it in.
Heat a skillet or griddle over medium-high heat.
Cook the naan for 1–2 minutes on each side until golden spots appear and the bread is cooked.
Brush the hot naan with melted butter and serve warm.