Prepare Your Ingredients: Gather all smoothie components, ensuring bananas are frozen for creaminess. Rinse and remove kale stems if needed, and measure out your non-dairy milk and flaxseed meal.
Blend the Smoothie Base: Place avocado, frozen bananas, berries, spinach, kale, flaxseed, and plant milk into a high-speed blender. Blend on high until you achieve a smooth, thick consistency, scraping down the sides if necessary. Add more plant milk a little at a time if you prefer a thinner texture.
Adjust Flavors and Sweetness: Taste your smoothie mixture and customize sweetness or color as desired. Add more ripe banana or a splash of maple syrup if you want it sweeter, or more spinach for a deeper green tone.
Add Nut Butter for Protein Boost (Optional): If using, blend in almond or peanut butter to enrich flavor and increase protein content. Pulse until fully incorporated and creamy.
Portion Into Bowls: Divide the smoothie evenly between two serving bowls, smoothing the top to prepare for toppings.
Add Your Favorite Toppings: Sprinkle on your chosen toppings, such as sunflower seeds, granola, nuts, shredded coconut, fresh berries, and hemp seeds, adding texture, nutrients, and visual appeal.