Tangy, sweet, and perfectly creamy, this Key Lime Pie Protein Fluff packs all the classic flavors of key lime pie into a high-protein, meal-prep-friendly jar dessert!
Why You’ll Love This Recipe
High-Protein & Low-Fat: A combination of cottage cheese, Greek yogurt, and protein powder delivers a serious protein boost per serving.
No-Bake & Prepped in 10 Minutes: Simple blend-and-layer method with no oven required.
Perfect for Meal Prep: Layered in mason jars, these keep fresh and ready to eat all week long.
Essential Kitchen Equipment
High-Speed Blender or Food Processor: Crucial for whipping the cottage cheese into a smooth texture.
4 Mason Jars (12 oz to 16 oz): For layering and storing individual portions.
Zester / Microplane: For fresh lime zest on top.
Ingredients
Crust Layer:
8 sheets Graham crackers (crushed into fine crumbs)
1 tbsp Melted butter or coconut oil (optional, for bind)
Key Lime Protein Base:
1 1/2 cups Low-fat cottage cheese
1 cup Non-fat plain or vanilla Greek yogurt
2 scoops (60g) Vanilla protein powder or collagen
1/3 cup Fresh lime juice (approx. 3–4 limes)
1 tbsp Lime zest
2–3 tbsp Honey or liquid stevia/maple syrup (to taste)
Toppings:
4 tbsp Sugar-free whipped topping or light whipped cream
Lime slices and extra lime zest
Step-by-Step Instructions
Step 1: Prep the Crust
1. Crush the 8 graham cracker sheets into fine crumbs.
2. Divide half of the crumbs evenly among the bottoms of 4 mason jars to create the base layer.
Step 2: Blend the Filling
1. Add the 1 1/2 cups cottage cheese, 1 cup Greek yogurt, 2 scoops vanilla protein powder, 1/3 cup lime juice, 1 tbsp lime zest, and sweetener into a high-speed blender.
2. Blend on high for 1 to 2 minutes until completely velvety, silky, and free of any curd texture.
Step 3: Layer the Jars
1. Pipe or spoon half of the green lime fluff over the graham cracker bases in each jar.
2. Sprinkle the remaining graham cracker crumbs over the middle layer.
3. Top with the remaining lime fluff.
Step 4: Garnish & Chill
1. Top each jar with a dollop of whipped cream, a pinch of fresh lime zest, and a fresh lime slice.
2. Seal the jars and chill in the refrigerator for at least 1 hour to set before enjoying cold!
Chef’s Tips
Blend Thoroughly: Don’t rush step 2—blending the cottage cheese long enough is the key to achieving a light, smooth mousse texture without lumps.
Key Limes vs. Regular Limes: Key limes give a slightly sweeter, more aromatic tang, but standard Persian limes work brilliantly too!
Nutritional Breakdown (Per Jar / 4 Servings Yield)
Servings: 4 jars
Calories: ~240 kcal
Protein: 25g
Net Carbs: 22g
Fat: 4g
Frequently Asked Questions (FAQ)
How long do these stay fresh in the fridge?
Sealed tight with their lids, these protein fluff jars stay fresh and delicious in the refrigerator for up to 4 to 5 days.