Healthy and delicious blueberry oatmeal yogurt cake

130 g oat flakes(gluten free) 1 1/2 cup
160 ml hot water(2/3 cup)
2 eggs
salt
40 g sweetener(stevia/ or your choice) 3 1/4 tbsp
150 g yogurt (1/2 cup)
2 tbsp vegetable oil
60 g chopped walnuts (1/2 cup)
40 g almond flour (1/2 cup)
6 g baking powder(1 1/4 tsp)
1/2 teaspoon baking soda
60 g blueberries(2.11 oz)
grease with butter/ oil
bake for 45-50 minutes at 180°C/ 360°F