Preheat Oven: Set the oven to 390°F (200°C).
Brown Butter: Melt butter in a saucepan over medium heat until it turns golden brown and smells nutty, about 5-10 minutes. Cool it by placing in a bowl of cold water.
4 oz butter
Mix Egg Whites and Sugar: Whisk egg whites and sugar just until a bit of foam forms.
5 oz egg whites, 3 oz sugar
Add Honey and Vanilla: Stir in honey and vanilla.
1 oz honey, 1/2 tsp vanilla extract
Incorporate Dry Ingredients: Sift almond flour, cake flour, and baking powder together and mix into the wet ingredients.
2.5 oz almond flour, 2 oz cake flour, 1/2 tsp baking powder
Combine Butter: Add cooled brown butter, including the burned bits, ensuring it's not too hot.
Prepare Pan: Grease the mold with butter, ensuring all surfaces are covered. Optionally, dust with flour or sugar if not using a non-stick pan.
Fill Molds: Fill each mold about three-quarters full with batter.
Bake: Place in the oven, immediately reduce heat to 360°F (180°C), and bake for 13-15 minutes until the edges brown and the center sets.
Cool: Let financiers cool in the pan for 10-15 minutes, then remove.
Serve: Enjoy your financiers once cooled.