Blueberry lemon muffin mug cake - Gluten-Free Heaven

Ingredients

• 4 tbsp gluten-free flour
• 2 tbsp Vanilla Vega Clean Protein
• 1 tbsp caster sugar
• 1/2 tsp gluten-free baking powder
• 1/4 tsp bicarbonate of soda
• 4 tbsp unsweetened almond drink or plant-based drink of choice
• 2 tsp rapeseed or sunflower oil
• 1/4 tsp lemon juice
• a handful of frozen blueberries
• optional topping: blueberries, sprinkle of sugar, lemon zest