Spinach Puffs
Recipe: https://recipestripper.com/recipes/2d3677f8-30c4-48d9-a734-13b878aea661
Original source: https://www.delish.com/cooking/recipe-ideas/a38326725/spinach-puffs-recipe/

Filled with a mixture of sautéed onion, garlic,  spinach, and cream cheese baked inside puff pastry cups, spinach puffs are the ultimate easy, classic appetizer.
Yield: 9
Prep time: PT30M
Cook time: PT0S
Total time: PT1H30M

Ingredients
- 1 tbsp. vegetable oil
- 1/3 c. onion, finely chopped
- Kosher salt
- 2 cloves garlic, minced
- 4 oz. cream cheese, softened
- 2 eggs, divided
- 1 (10-oz.) package frozen spinach, thawed and squeezed as dry as possible
- 3/4 c. crumbled feta
- 2 tbsp. fresh dill, chopped
- 2 tsp. lemon zest
- Freshly ground black pepper
- Cooking spray
- All-purpose flour, for rolling puff pastry
- 1 sheet from 1 (17.3-oz) package puff pastry, thawed in the refrigerator

Instructions
1. In a medium skillet, heat oil over      medium heat. Add onions and season with 1/2 teaspoon salt. Cook, stirring      occasionally, until softened, 5 to 7 minutes. Add garlic and cook until fragrant,      about 30 seconds more. Remove from heat.
2. In a large bowl, stir together      cream cheese and 1 egg. Stir in garlic-onion mixture, spinach, feta, dill, and lemon zest and season with salt and pepper.
3. Grease 9 cups of a muffin tin      with cooking spray. On a lightly floured surface, roll out puff pastry      sheet to a 12” square. Cut into 9 smaller squares, each about 4” wide.      Ease each puff pastry square into a greased muffin cup, letting the      corners hang over the sides. Add about 2½ tablespoons of filling to the center      of each. Fold in pastry corners to meet in the center over the filling and pinch together. Refrigerate for 30 minutes (or freeze for 15 minutes).
4. Meanwhile, adjust an oven rack      to center position and preheat the oven to 400°.
5. Beat remaining egg in a small bowl with 1 teaspoon      water and brush on top of the chilled pastry.
6. Bake until puffed and      golden brown on the bottom, about 25 minutes. Let cool slightly before      lifting out of the muffin tin. Serve warm or at room temperature.