Green Vegetable Tart

This tart is delicious and packed with nutritious green vegetables. It is one of my husband's favorites and to my surprise my kids really liked it and ate it all up.  I usually post recipes for single batches, so everyone can multiply it to fit their family's needs. This is a quadruple batch.  I post this as a larger batch because it works easier with the amounts some of the ingredients are sold in.  Leeks are generally sold 3 to a bundle, and this utilizes all of them. It also uses a 32 oz container of ricotta cheese which is one of the two sizes it's sold in.

Adapted from: Savoring Appetizers
Difficulty: Moderate
Category: Freezer to Pan
Recipe Column: U

Yields 4 pies.  Each pie serves 6