Best Cake for teatime that drive the whole family crazy with flavor

Ingredients:-

Egg Large 2
Caster Sugar 100 gm
Yogurt 130 gm
Vegitable Oil 50 ml

All Purpose Flour 250 gm
Baking Powder 2 tsp
Milk 100 ml
Blueberries fresh or frozen 120 gm

Pan Size 24-26 cm

Crumble Preparation:-
Caster Sugar 40 gm
All Purpose Flour 60 gm
Unsalted cold Butter 40 gm

Bake In Preheated Oven
at 180°C 40 minutes
use middle rack