Thumbprint Cookies
Preheat oven to 300 degrees F. Grease cookie sheets. Separate egg, reserving egg white. Cream butter or margarine, sugar, and egg yolk. Add vanilla, flour and salt, mixing well. Shape dough into balls. Roll in egg white, then walnuts. Place on cookie sheets about 2 inches apart. Bake for 5 minutes. Remove cookies from oven. With thumb, dent each cookie. Put jelly or preserves in each thumbprint. Bake for another 8 minutes.
Preheat oven to 300 degrees F. Grease cookie sheets. Separate egg, reserving egg white. Cream butter or margarine, sugar, and egg yolk. Add vanilla, flour and salt, mixing well. Shape dough into balls. Roll in egg white, then walnuts. Place on cookie sheets about 2 inches apart. Bake for 5 minutes. Remove cookies from oven. With thumb, dent each cookie. Put jelly or preserves in each thumbprint. Bake for another 8 minutes.
- Carbohydrate 12.9241168162631 g
- Cholesterol 20.3354166838572 mg
- Fat 10.9518336217757 g
- Fiber 0.608243051998834 g
- Protein 1.85882375232669 g
- Saturated Fat 5.1732719489526 g
- Serving Size 1 1 Serving (30g)
- Sodium 188.168861325855 mg
- Sugar 12.3158737642642 g
- Trans Fat 0.715571195125828 g
- Calories 154 calories
Step-by-step
- Preheat oven to 300 degrees F. Grease cookie sheets.
- Separate egg, reserving egg white. Cream butter or margarine, sugar, and egg yolk.
- Add vanilla, flour and salt, mixing well.
- Shape dough into balls. Roll in egg white, then walnuts. Place on cookie sheets about 2 inches apart. Bake for 5 minutes.
- Remove cookies from oven. With thumb, dent each cookie. Put jelly or preserves in each thumbprint. Bake for another 8 minutes.
Operating strictly within a low-temperature baking window of 300 degrees Fahrenheit prevents excess browning while allowing the high ratio of butter to melt and structure the crumb gently. Softened butter creamed with brown sugar incorporates microscopic air pockets that expand when exposed to oven heat, though the absence of chemical leavening agents like baking powder ensures these rounds maintain a dense, shortbread-like texture rather than rising significantly. Controlling the initial five-minute bake time is critical because removing the tray prematurely allows the dough to retain enough plasticity for indentation without fracturing the outer crust.
Separating the egg yields two distinct functional components, with the yolk contributing emulsifying fats to the dough matrix while the liquid albumen acts as a targeted adhesive for the exterior nut coating. Finely chopped walnuts adhere directly to the protein-rich egg white wash, creating a toasted barrier that adds both structural crunch and a roasted lipid profile to complement the sweet center. Substituting granulated white sugar for the brown sugar alters moisture retention significantly, as molasses present in brown sugar introduces hygroscopic properties that keep the interior chewy.
Jam or preserves deposited into the thumbprint undergo thermal concentration during the subsequent eight-minute bake, evaporating excess water content so the fruit sugars set into a stable, glossy gel. Pectin levels vary wildly among fruit preserves, meaning low-sugar or homemade fruit spreads might liquefy and boil over the edges if they lack sufficient gelling agents to withstand 300 degrees Fahrenheit heat. Spooning preserves cold straight from refrigeration into the warm indentation creates a thermal shock that can crack the semi-set dough if the thumb indentation was pressed too deeply.
Historically rooted in Swedish butter cookies known as hallongrotta, meaning raspberry cave, this pastry format relies entirely on physical shaping rather than specialized molds to hold its filling. Storing finished batches in an airtight container at room temperature for up to five days preserves the crumb integrity, whereas refrigeration introduces excess ambient humidity that softens the toasted walnut crust and degrades the crisp texture.
