Preheat oven to 350 degrees F.Advertisement
Cut leeks in half lengthwise; rinse thoroughly under water. Cut crosswise into thin slices, place in a colander and rinse again.
Melt butter in a large ovenproof skillet or Dutch oven over medium heat. Add the leeks; cook, stirring often, until softened, 3 to 4 minutes. Stir in rice; cook, stirring frequently, until the grains become somewhat translucent, about 1 minute. Stir in mustard, salt and pepper until combined. Pour in broth and bring to a simmer, scraping up any browned bits.
Cover the pan. Bake the rice for 40 minutes. Then sprinkle asparagus and crab over the rice, replace the cover and continue baking until the rice and asparagus are tender, about 15 minutes more. Stir in tarragon (or dill). Serve with lemon wedges.
Test Kitchen Note: Perfectly cooked rice is not simple. In fact, it's something that we struggle with occasionally in the Test Kitchen. To have the most success cooking whole-grain rice, we recommend using a pan with a tight-fitting lid, cooking on your coolest (or simmer) burner and making sure the rice is simmering at the “lowest bubble.” While testing the recipes that use less than 1 cup of dry rice, we found that the cooking time varied greatly depending on what stove we used. Although whole-grain rice usually requires 50 minutes of cooking, we found smaller volumes of rice were sometimes done in as little as 30 minutes (and burned at 50 minutes). So, when cooking a small batch of rice, start checking it after 30 minutes to make sure it doesn't burn.
2 starch, 1 vegetable, 1 lean meat