At Osaka Grub, they serve their "okonomiyaki sliders" with a beef patty, pickled ginger, Japanese mayo, bonito flakes, and aonori (seaweed flakes). The cost is $6, and you can swing by their establishment on Essex St. in New York City during their regular business hours.
If you don't live near New York City, you can try making these yourself. Below is the "Best Okonomiyaki Recipe" I've adapted from okonomiyakiworld.com .
1 cup flour
2/3 cup chicken stock
4 cups cabbage, cut thinly
2 stalks green onion, thinly sliced diagonally
1/4 c Tenkasu (tempura bits)
6 strips bacon, crumbled
1 oz Pickled Ginger (optional)
1/4 c grated yam
Aonori (Seaweed Flakes)
Katsuobushi (Bonito Flakes)
1. In large bowl, whisk flour and water/broth until smooth.
2. Add eggs, cabbage, onions, Tenkasu, Ginger, and crumbled bacon and mix, but don't over mix.
3. Oil a pan or griddle that has been heated to approximately 400F and add Okonomiyaki mixture divided into six pancakes.
4. After about 3 minutes, flip over pancake, and cook for 4 minutes.
5. Flip pancake again and cook for 3 minutes or until firm and well browned.
6. Remove to plate and drizzle with Kewpie mayonnaise, okonomi sauce, and sprinkle with Aonori and Katsuobushi.
7. Serve and enjoy!