Bring a pot of water to a boil and cook the ramen noodles according to the package instructions until they are al dente. Drain the noodles and set them aside in a bowl.
In a medium saucepan, heat the toasted sesame oil over medium heat. Once the oil is warm, add the minced garlic and grated ginger. Sauté for about 1 minute until they release a fragrant aroma, being careful not to burn them.
Toss in the sliced red bell pepper and sauté for an additional 2-3 minutes until the peppers are slightly tender but still vibrant in color.
Pour in the vegetable broth, soy sauce, and sriracha. Add the creamy peanut butter and stir well until the peanut butter is fully dissolved, creating a smooth and cohesive sauce. Let it simmer for 2-3 minutes to allow the flavors to meld together.
Gently fold the cooked ramen noodles and baby spinach into the saucepan, tossing them in the spicy peanut sauce until the noodles are thoroughly coated and the spinach has wilted.
Remove the saucepan from heat and serve the ramen hot in bowls. Garnish each bowl with chopped green onions and a sprinkle of toasted sesame seeds. Provide lime wedges on the side for an extra hit of freshness!