Popsugar Health & Fitness Breakfast High Protein Smoothie Recipes Sip on 20 Grams of Protein With These Quick, Flavorful Smoothie Recipes 30 March 2018 by Jenny Sugar View On One Page Photo 9 of 18 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 9 Flat-Belly High-Protein Smoothie Calories: 341 Protein: 21 grams Get the recipe: flat-belly high-protein smoothie Previous Next Start Slideshow BreakfastBeveragesProteinSmoothiesHealthy SnacksHealthy RecipesHealthy Living