Classic green bean casserole, but make it bite-sized—and irresistibly flaky. These Green Bean Casserole Bites wrap tender green beans, garlicky mushrooms, and creamy onion gravy in golden crescent dough, finished with a crunchy crown of crispy fried onions. Portable, poppable, and packed with holiday flavor—these bites bring the comfort without the casserole dish.
• Kosher salt
• 1 lb (16 oz) green beans, trimmed
• 8 oz cremini mushrooms, sliced
• 10 Tbsp unsalted butter, divided
• 2 yellow onions, thinly sliced
• 6 cloves garlic, finely chopped
• 1/2 cup (60g) all-purpose flour
• 3 cups whole milk
• Freshly ground black pepper
• 4 (8-oz) cans crescent roll dough
• 2 cups crispy fried onions
• Optional twist: 1 tsp fresh thyme or rosemary, 1/4 tsp cayenne, 1/4 cup grated Parmesan
Blanch beans: Boil salted water. Cook green beans 3–4 mins, then shock in ice water. Chop into bite-size pieces.
Sauté mushrooms: In 4 Tbsp butter, cook mushrooms with garlic and herbs (if using) until browned. Set aside.
Caramelize onions: In the same pan, melt remaining 6 Tbsp butter and cook onions low and slow for 15–20 mins until golden.
Make the sauce: Stir in flour, cook 1–2 mins, then whisk in milk until thickened. Season with salt, pepper, cayenne. Fold in green beans, mushrooms, and Parmesan. Cool slightly.
Assemble bites: Preheat oven to 375°F (190°C). Unroll crescent dough and cut into squares (about 2-inch pieces). Press into greased mini muffin tins. Fill each with spoonful of green bean mixture, top with crispy onions.
Bake: Bake for 12–15 mins or until golden and bubbling. Let cool slightly before removing from tin.