This peanut butter banana smoothie is thick, creamy, and packed with natural sweetness and protein, blending frozen banana, natural peanut butter, and your choice of milk into a satisfying breakfast or snack that comes together in just five minutes.
Peel a ripe banana, slice it into 1-inch (2.5cm) rounds, and lay flat on a parchment-lined baking sheet. Freeze for at least 2 hours until completely solid, then transfer to a zip-lock freezer bag for storage.
Pour 1 cup (240ml) of milk into the blender first, then add the peanut butter, vanilla extract, salt, and honey or maple syrup if using. Add any optional ingredients such as protein powder, chia seeds, flaxseed, cocoa powder, or spinach at this stage.
Add the frozen banana slices to the blender. Do not add ice if using frozen banana; if using a fresh banana instead, add 1/2 cup (120ml) of ice to compensate for the lack of chill and thickness.
Secure the blender lid and start on low speed, gradually increasing to high. Blend for 45 to 60 seconds until completely smooth; if the blender stalls, stop and push the mixture down with a spatula, adding a splash of milk if needed.
Taste the smoothie and adjust as needed: add honey for more sweetness, a splash of milk if too thick, extra frozen banana if too thin, or more peanut butter for a stronger nutty flavor. Blend for another 10 seconds after any adjustments.
Pour into a tall glass or wide-mouth mason jar and serve immediately for the best thick, creamy texture. Garnish with a peanut butter drizzle, banana slices, or a sprinkle of granola if desired.
Notes
Use overripe bananas: The darker and more spotted the banana, the sweeter and more flavorful your smoothie will be. Never use green or barely yellow bananas.
Always freeze the banana: Frozen banana is the secret to a thick, creamy, milkshake-like texture. Fresh banana with ice produces a thinner, more watery result.
Add liquid first: Always pour milk into the blender before the other ingredients to protect the blade and ensure even blending.
Use natural peanut butter: Choose a peanut butter with no added sugar, oil, or stabilizers for the cleanest flavor and best nutrition. Almond butter works equally well as a substitute.
Dairy-free option: Swap dairy milk for oat, almond, soy, or coconut milk. Oat milk gives the creamiest result among plant-based options.
Boost the protein: Add one scoop of vanilla or chocolate protein powder, or replace half the milk with plain Greek yogurt, to increase protein to 30 or more grams per serving.
Meal prep smoothie packs: Slice and freeze bananas in individual portions, combine with dry add-ins in zip-lock bags, and store in the freezer for up to 3 months. In the morning, just dump a bag into the blender, add milk, and blend.
Storage: Store leftover smoothie in a sealed jar in the refrigerator for up to 24 hours. It will separate; shake or stir well before drinking. For longer storage, freeze for up to 1 month and thaw overnight in the refrigerator.
Do not over-blend: Stop blending as soon as the smoothie is smooth. Over-blending generates heat that warms the mixture and breaks down the thick, creamy texture.
Chill your glass: Place your serving glass in the freezer for a few minutes while blending to keep the smoothie colder and thicker for longer after pouring.