Add all sauce mixture ingredients to a small bowl and mix until well combined.
In a shallow pot, arrange the onion, tofu, spam, mushrooms, sausages, rice cakes, kimchi, baked beans, and scallions. Pour the sauce mixture and chicken stock over the top.
Bring to a boil over medium-high heat, gently stirring to help dissolve the sauce into the broth.
Add the instant ramen noodles and place the slice of American cheese on top. Cook for about 3 minutes, or until the noodles are tender and the cheese has melted into the stew.
Garnish with scallions and optional chili peppers. Serve hot and enjoy.