Preheat oven to 356°F (180°C). Whisk 2 eggs with ⅓ cup (60 g) sugar and a pinch of salt until smooth. Add softened butter and beat for 2 minutes until creamy, scraping the bowl as needed.
Mix in baobab powder until fully blended and smooth. Let the batter rest a few minutes so the baobab can dissolve and flavor the dough.
Add flour and mix until a dough forms. Press it into the bowl, cover with plastic wrap, and chill in the fridge for 30 minutes to firm up the butter.
While the dough chills, prepare the lemon curd. Zest and juice the lemon (you’ll get about 2 tsp zest).
In a small pot, combine lemon juice, 2 egg yolks, 1 whole egg, sugar, and zest. Cook on low, stirring constantly, until it thickens. Stir in butter and cook another few minutes until the curd is thick and glossy.
Scoop the dough into 25 balls (about 1 tbsp each) and roll between your palms. Place on a parchment-lined baking sheet.
Press a small well into each ball using your finger, a teaspoon, or the cap of a plastic bottle (dip it in oil if it sticks).
Bake for 11–12 minutes. Watch closely—baobab gives the cookies a deeper color, but they’re done once edges are lightly golden. Remove slightly early if unsure; they’ll firm as they cool.
Transfer cookies to a rack and dust with powdered sugar while warm. Fill centers with warm lemon curd, reheating it slightly if too thick to pour.
Cool completely before serving. The edges will crisp up as the centers stay soft and crumbly. Enjoy!