Keto Blackberry Crumble Bar

【15x20cm Mould】

• 200 g blackberries
• 40 g erythritol
• 70 g almond flour
• 20 g coconut flour
• 30 g allulose
• 1 tbs lemon juice
• 1/4 tsp salt
• 1/4 tsp baking powder
• 1/2 tsp xanthan gum
• 1/2 tsp cinnamon powder
• 1/4 tsp vanilla essence
• 1 tbsp erythritol