Cut the ends off the Brussels sprouts and discard. Slice into 4 vertical wedges.
Add the olive oil to a medium skillet over medium-low heat. When warm, add the Brussels sprouts. Toss to coat with the oil. Cover and cook for 10-12 minutes, turning once or twice, or until very soft when poked with a fork.
Let cool slightly. Serve one piece at a time to your child if doing baby-led weaning.
To make a puree, transfer to a blender with the broth and optional flavorings. Blend smooth and serve.
Notes
Store the puree in airtight containers in the fridge for up to 5 days. Or freeze in an ice cube tray overnight, transfer to a freezer bag, remove as much air as you can, and freeze for up to 6 months. Thaw 1-2 cubes overnight in the fridge in a container or at room temperature for about an hour.
Add a few basil, spinach, or parsley leaves to enhance the green color.
Add minced garlic or onion to the pan when cooking the Brussels sprouts for more flavor.
Use as a sauce for pasta with a sprinkle of Parmesan cheese on top. I like 8 ounces cooked pasta, 1/4-1/3 cup of the puree, 1 tablespoon each fresh lemon juice and zest, and about 1/4 cup Parmesan cheese.