Just like there are several types of lentils, there is more than one kind of split peas. Given their nuances, there’s not a singular cooking time for the various versions of split peas. While green split peas take around 25 minutes to simmer, yellow split peas can take anywhere from 40 minutes to around an hour. They also have their own flavor differences, with green split peas being slightly sweeter and the yellow ones being milder.
The type of split peas you use in place of lentils should depend on what you’re making. If you love curried roasted pumpkin and lentil soup for the sweetness that the red lentils bring, green split peas are the right choice. For something like a roasted garlic tomato lentil bowl, however, yellow split peas fare much better. Both green lentils and yellow split peas have a mild flavor that won’t distract from the bolder aspects of the fiery grain bowl.