Peanut Butter Protein Shake

• 1 overripe frozen banana
• ¼ cup powdered peanut butter
• ½ cup frozen cauliflower rice optional
• 1 cup unsweetened almond milk
• 1 tablespoon flax seed or flax seed meal
• 1 tablespoon chia seeds
• 1 teaspoon vanilla
• 1 tablespoon maple syrup optional, for added sweetness
• 1 tablespoon creamy peanut butter optional, for topping
• 1 tablespoon vegan whipped cream optional, for topping