Preheat oven. Preheat to 390°F (200°C).
Brown butter. Melt and brown butter over medium heat, stirring occasionally, until golden brown and nutty. Remove from heat and cool in cold water until no longer hot.
7 tbsp butter
Mix egg whites and sugar. Whisk together egg whites and sugar until just combined.
5 oz egg whites, 1/2 cup brown sugar
Add honey and vanilla. Stir in honey and vanilla extract.
1 oz honey, 1/2 tsp vanilla extract
Add pumpkin puree. Mix in the pumpkin puree.
1/4 cup pumpkin puree
Add dry ingredients. Sift almond flour, cake flour, pumpkin spice, and baking powder. Combine with the wet mixture.
2.5 oz almond flour, 2.5 oz cake flour, 1 tsp pumpkin spice, 1/2 tsp baking powder
Add butter. Stir in cooled brown butter, including all dark bits.
Prepare the pan. Grease the molds and, if your pan isn't non-stick, dust with flour or sugar for easy removal.
Fill molds. Spoon batter into molds, filling each three-quarters full.
Bake. Lower oven temperature to 360°F (180°C), place the pan in the oven, and bake for 13-15 minutes until the edges brown and centers are set.
Cool. Let financiers cool for 10-15 minutes in the pan, then release and finish cooling on a wire rack.