These creamy lentils, which we last featured in 2019, get a sophisticated finishing touch from a savory compound butter made with blue cheese. Smarts #1: Compound butters can be frozen for up to a few months. Use them to add flavor and richness to soup, roasted vegetables, or toast. Smarts #2: We recommend soaking the lentils for 8 hours prior to cooking, so be sure to allow enough time. Alternatively, feel free to skip the soaking step and cook them for 25-30 minutes, or use canned or pre-cooked lentils.
Heat a Dutch oven over medium-high heat. Add cooking oil and then onions to heated oil. Saute until starting to soften, 2 to 3 minutes.
Add drained lentils, stock, and salt. Cover and bring to a simmer. Simmer, uncovered, until lentils are tender, ~10 minutes. Add some more stock or water if liquid cooks off before lentils are tender. (Note: If you didn’t soak your lentils before starting, increase the amount of stock you add by 50% and plan to simmer for 25 to 30 minutes. Keep an eye on them and add additional liquid if needed.)
While lentils simmer, in a large bowl whisk together vinegar, honey, and mustard. Add olive oil while whisking. Top dressing with spinach, cucumbers, and tomatoes. Toss everything to combine.
Taste lentils and season with some salt and pepper.
Divide lentils between serving bowls and top each bowl with blue cheese butter. Add chives on top.