Choc-Peanut Baked Oats

• 160 g oats
• 2 tbsp cacao powder
• 40 g protein powder (sweetened)
• 2 tbsp chia seeds
• 0.25 tsp salt
• 1 tsp baking powder
• 1 ripe banana, mashed
• 1 tsp vanilla extract
• 250 ml milk
• 3 tbsp peanut butter
• 30 g dark chocolate chips
• 400 g berries
• 150 g Greek Yoghurt
• drizzle of honey (optional)