What is a cream filled oblong pastry?

You're describing a classic pastry! There are a few possibilities, depending on the specific type of cream filling and the pastry itself:

Common possibilities:

* Eclair: A long, cylindrical pastry made of choux pastry, filled with cream (usually pastry cream or whipped cream) and often topped with chocolate glaze.

* Cream Horn: A long, conical pastry made of puff pastry, filled with cream (usually whipped cream or custard) and often dusted with powdered sugar.

* Custard Tart: While not strictly oblong, a custard tart can sometimes be made in a long, rectangular shape and filled with a creamy custard.

Less common, but still possible:

* Long John: A long, cylindrical pastry (usually made of sweet dough) with a sugar glaze or cinnamon sugar topping, sometimes filled with cream.

* Croissant: While not typically filled with cream, some bakeries offer cream-filled croissants.

To get a more precise answer, you could provide more details, such as:

* What does the pastry look like? (Color, shape, texture)

* What type of cream is used? (Pastry cream, whipped cream, custard, etc.)

* What other ingredients are used? (Chocolate, sugar, cinnamon, etc.)

Let me know if you can provide more details, and I'll help you identify the pastry!