A summer soup is not an oxymoron. Take this lively lentil soup, rich and aromatic from both fresh and cooked tomatoes, and basil. Adding fresh tomatoes and basil at both the beginning and end of cooking ensures you get both their mellow, sweet side as well as their fresh, zingy side. The tomato paste and cream lend their sturdy flavors in a way that’s reminiscent of vodka sauce, while the lentils almost melt away into the background. The slow cooker is actually a great warm-weather tool, because it doesn’t heat up your kitchen the way the oven does, and it uses very little energy. This soup holds very well on warm before you add the finishing ingredients, making the timing flexible and weeknight-friendly.
