For the dough: Combine in a food processor the flour, 3 tablespoons of sugar, 1/8 teaspoon of salt, and baking powder. Pulse 3 times.
Add the butter and process until there are no large pieces of butter left, about 15 seconds.
Add an egg and pulse about 10 times until the dough forms into a ball.
Form a ball with your hands, wrap it in plastic, and refrigerate for an hour.
For the filling: Combine honey and sugar in a saucepan and heat gently until it boils without stirring, allowing the sugar to dissolve. Remove from heat, add butter, and let it melt.
In a bowl, stir together eggs, rum, and salt. Carefully add the butter mixture with honey, being careful not to overmix. Let cool.
Preheat oven to 180°C. For the dough, take it out of the refrigerator and roll it with a rolling pin to form a 30 cm diameter circle. Place it in a small greased pie dish, pressing down a bit.
Trim the excess edges. Arrange the walnuts in the dough, pour the filling, and place it over the walnuts.
Using a fork, push the walnuts down to ensure they are covered. Add some walnuts on top.
Bake for 35 minutes until the filling is firm. Serve cold or warm.
Nutritional Information
* * Information per 100g serving, percentage of daily values based on a 2,000 calorie diet.
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