Add the avocado, frozen banana chunks, honey, almond milk, lime juice, and vanilla extract to a high-powered blender.
Blend on low speed for 10-15 seconds to break down the ingredients, then increase to medium-high speed. Use the tamper tool to push ingredients toward the blades if needed.
Continue blending until completely smooth and thick, about 30-45 seconds total. The mixture should be thick enough to hold a spoon upright. If too thick, add almond milk 1 tablespoon at a time and pulse briefly.
Pour the smoothie base into a chilled bowl using a spatula to scrape out every bit of creamy goodness.
Arrange your choice of toppings in decorative rows or sections across the surface. Popular options include fresh berries, sliced banana, granola, coconut flakes, chia seeds, or chopped nuts.
Drizzle with extra honey in a zigzag pattern, serve immediately with a spoon, and enjoy while cold and thick.
