Birthday Cake Confetti Smoothie Bowl
All the celebration, none of the frosting crash. This bowl tastes like soft-serve cake batter, ribbons beautifully with a yogurt “frosting,” and takes natural sprinkles like a dream.
What it’s best for
Mood-lifting dessert vibes with balanced macros. Optional protein/collagen for staying power; dairy-free paths included.
Yield & time
Makes 1 generous bowl (~450–500g). 5 minutes active.
Base (soft-serve thick)
- 250 g frozen banana (1 3/4 - 2 cups slices) 
- 50–60 g cashew milk (¼ cup) (almond or 2% milk work too) 
- 60 g plain Greek yogurt (¼ cup) (DF: coconut yogurt) 
- 20–25 g vanilla protein (1 scoop; ≈2–3 Tbsp, optional) 
- 10 g cashew butter (2 tsp) 
- 5–10 g maple or date syrup (1–2 tsp, to taste) 
- 1 g vanilla extract (¼ tsp) 
- Cake-batter emulsion 1–2 g (¼–½ tsp, brand strength varies) 
- Almond extract 1–2 drops (optional) 
- Pinch fine sea salt (~0.3–0.5 g) 
“Frosting” drizzle
Whisk 40 g Greek yogurt (3 Tbsp) + 5–8 g maple (1–1½ tsp) + 0.25 tsp vanilla + tiny pinch salt. Thin with 5–10 g milk to squeeze-bottle flow.
Toppings
Natural sprinkles, granola 15–20 g (1½–2 Tbsp), banana coins, oat crumb (pulse 10 g oats + cinnamon pinch), a few cacao nibs 5 g (1 Tbsp) if you like contrast.
Method
- Chill the bowl 10–15 minutes. Paint 3–4 “frosting” lines up the sides; freeze 2–3 minutes to set. 
- Blend the base: liquids → powders/salt → yogurt/nut butter → frozen banana last. Tamper to soft-serve peaks; stop as soon as it turns satiny. 
- Fill & finish: spoon in the base, add a top swirl of frosting drizzle, marble with a skewer, then add sprinkles and crunch. 
Make it thicker
- Keep total free liquid to 50–70 g. 
- If your blender warms the mix, add 40–60 g ice (⅓–½ cup) and blend just 5–10 seconds. 
- Still soft? Add +10 g oats (2 Tbsp) or +10 g collagen (≈1½ Tbsp). 
Flavor notes & swaps
- Dairy-free: almond/cashew milk + coconut yogurt; skip collagen. 
- Sugar-lite: hold base syrup to 5 g, add allulose 6–8 g (1½–2 tsp) for sweetness without thinning; or move sweetness to the frosting drizzle. 
- Vanilla cake pop: add collagen 10 g for frosting-like gloss and a butter-vanilla emulsion 0.25 tsp. 
One bowl with yogurt + protein is roughly 380–450 kcal, ~22–30 g protein, ~55–70 g carbs, ~7–10 g fat. Use your brands in a tracker for precise numbers.
General information only; not medical advice. Supplements are optional.