Mix dry ingredients. In a large bowl, whisk flour, baking powder, baking soda, and sugar until combined.
Whisk wet ingredients. In a separate bowl, beat eggs lightly; stir in honey, milk, and oil/butter.
Combine & rest. Pour wet mix into dry, fold gently until just combined (small lumps okay). Cover and rest 15–20 minutes.
Heat pan. Warm a non‑stick pan over medium‑low heat; brush lightly with oil and wipe off excess.
Cook pancakes. Pour ~2 Tbsp batter per cake into 8 cm circles. Cook 1½–2 minutes until bubbles form; flip and cook 30–45 seconds. Transfer to a rack.
Assemble. Spread 1 Tbsp red bean paste on one pancake; top with another and press gently to seal.
Optional finish. Grill assembled dorayaki in the pan 10 seconds per side for extra melded flavor.