Preheat the oven to 350 F/175 C/gas mark 4.

In a food processor, place the four, sugar, and egg. Turn the machine on and slowly add the butter, 2 tablespoons/30 g/1 ounce at a time. Add the vanilla and salt. Process until the dough forms a ball on top of the blades.

With the palms of your hands, roll the dough into balls about 2 inches/5 cm diameter. Place the balls on a greased baking sheet. Press the balls down slightly with the bottom of a glass or jar to a thickness of 1/4 inch/0.5 cm. Press your thumb into the middle of each circle to form a well, with out pressing all the way through the dough.

Fill each well with about 1/2 teaspoon of the jam. Bake until the cookies are golden brown, about 10 to 12 minutes.

Serve alone or with ice cream.

Makes one dozen cookies

Per serving: 1962 Calories (kcal); 189g Total Fat; (84% calories from fat); 8g Protein; 71g Carbohydrate; 683mg Cholesterol; 2255mg Sodium Food Exchanges: 0 Grain(Starch); 1 Lean Meat; 0 Vegetable; 0 Fruit; 37 Fat; 4 1/2 Other Carbohydrates