Grandma Ruth swears this is the easiest party sandwich to pass around while the big game’s on.

This low carb buffalo chicken blue cheese lettuce sandwich recipe is my game day tribute to Grandma Ruth. She was famous for having a big tray of easy-to-grab sandwiches ready right as the big game kicked off, and nobody wanted to be stuck in the kitchen once the score got close. This version keeps that same pass-around, crowd-pleasing vibe, but swaps bread for crisp romaine leaves so you can keep things lighter and low carb. Everything gets tossed in one bowl, scooped into sturdy lettuce “boats,” and packed into takeout-style boxes so guests can grab a box and head back to the couch without missing a play.

These low carb buffalo chicken lettuce sandwiches are perfect on their own for a lighter party spread, but they also play nicely with crunchy veggie sticks, celery, carrot coins, and sliced cucumbers. Add a bowl of extra blue cheese or ranch for dipping, plus a tray of baked wings or air-fryer fries for anyone who wants something heartier. For drinks, cold beer, sparkling water, or a simple pitcher of iced tea keep the game-day vibe casual and easy. Arrange the filled takeout boxes on a big tray in the center of your kitchen island or coffee table so everyone can grab-and-go.

Servings: 4

3 cups cooked shredded chicken (rotisserie or leftover)

Prep the romaine: Rinse the romaine heads under cool water and pat dry thoroughly with a clean kitchen towel or paper towels. Gently separate the larger outer leaves, keeping them as intact as possible. Set the leaves aside to fully air-dry while you prep the filling so they stay crisp and hold up like little sandwich boats.

Make the buffalo sauce mixture: In a large mixing bowl, whisk together the buffalo wing sauce and melted butter (if using) until smooth. The butter makes the sauce a bit richer and closer to classic wing-shop flavor, but you can skip it if you’re in a hurry or watching calories.

Stir in the creamy base: To the same bowl, add the Greek yogurt or sour cream, mayonnaise, garlic powder, onion powder, smoked paprika, salt, and black pepper. Whisk until everything is well combined and slightly thickened. Taste and adjust seasoning or heat level by adding more buffalo sauce if you like it spicier.

Fold in chicken and veggies: Add the shredded chicken to the bowl and toss with tongs or a spatula until every piece is coated in the buffalo mixture. Fold in the chopped celery, green onion, and 1/3 cup crumbled blue cheese. The mixture should be creamy but not soupy; if it seems too thick, splash in another tablespoon or two of buffalo sauce.

Assemble the lettuce sandwiches: Lay the romaine leaves out on a clean cutting board or tray, curved side up so they form natural cups. Spoon the buffalo chicken mixture into each leaf, packing it in gently so it fills the length of the leaf without overflowing. Aim for about 1/3 to 1/2 cup of filling per leaf, depending on size.

Top and garnish: Sprinkle the filled lettuce sandwiches with the remaining blue cheese crumbles and chopped parsley or cilantro, if using. This gives them that classic buffalo-and-blue-cheese look that makes everyone instantly know what they’re grabbing.

Pack into takeout boxes: For easy passing around during the game, nestle 3–4 filled romaine sandwiches into each takeout-style box or reusable meal prep container, arranging them snugly so they don’t tip over. Close the lids and line the boxes up on your kitchen counter or a tray so guests can grab a box and go.

Chill briefly or serve: If you have the time, chill the packed boxes in the fridge for about 15–20 minutes before serving so everything is extra crisp and the flavors meld a bit. Otherwise, serve right away while the romaine is cold and crunchy. Keep any extra boxes in the fridge and swap them out as the first ones disappear.

To dial down the heat for kids or spice-sensitive guests, use a mild buffalo sauce and add more Greek yogurt or sour cream to mellow it out. If you want a stronger blue cheese punch, double the blue cheese in the mix and on top, or drizzle with a little bottled blue cheese dressing. For a ranch twist, swap the blue cheese for shredded cheddar and use ranch dressing or ranch seasoning instead of some of the spices. You can also use leftover grilled chicken or slow-cooker chicken instead of rotisserie to make this even more budget-friendly. If you’re prepping ahead for a party, mix the buffalo chicken filling up to 2 days in advance and store it in the fridge, then assemble into romaine leaves and pack into takeout boxes right before guests arrive so the lettuce stays crisp. For a slightly heartier version while staying low carb, add finely chopped bell peppers or shredded cabbage to the chicken mixture for extra crunch and volume without needing bread.