Before you touch the oven, prepare every single vegetable. This is called "mise en place" (French cooking term meaning "everything in its place"). It sounds fancy but it just means "get organized." Wash your mushrooms under running water and pat them dry with a paper towel—wet mushrooms won't brown as nicely. Slice them into thin pieces about ¼-inch thick. Wash your carrots, peel them if the skin looks thick, and cut them into matchstick pieces about 2 inches long and as thin as a toothpick. Cut your broccoli into small florets about the size of your thumbnail. Slice your onion in half, lay it flat on your cutting board, and slice it into half-moon shapes. Wash your bok choy and slice it into ½-inch pieces. Measure your tofu, press it between paper towels to squeeze out excess water, then cut it into small cubes about the size of dice. Mince or crush your garlic cloves. Grate your ginger. Slice your green onion into thin ribbons. Do this all now, on the same cutting board, and your actual cooking becomes incredibly fast. Why this matters for beginners: When everything is prepped, the actual baking takes just minutes. You won't be rushing. You won't be stressed. You'll feel in control.

Turn your oven to 374°F (190°C). If you don't have an oven thermometer (which is fine—most people don't), just trust your oven's dial. While the oven preheats, take your 12-inch casserole dish and make sure it's clean and dry. Set it on your counter. Make sure you have the lid nearby. The oven will take about 10-15 minutes to fully preheat. You'll know it's ready when it beeps or dings, or when the heating element stops glowing red. Don't skip the preheating step—a preheated oven is what allows your noodles to soften evenly and your vegetables to roast rather than steam.

In a medium mixing bowl, pour your 2½ cups of water. Add your ¼ cup soy sauce, ½ cup coconut milk, 1 tablespoon maple syrup, and ¼ teaspoon salt. Grab a whisk or fork and stir these ingredients together until the maple syrup dissolves completely and everything looks smooth and combined. The mixture won't be perfectly uniform—that's okay. You're not trying to make it look like a single liquid; you're just mixing it together. Now add your glass noodles directly to this sauce. Using your hands or two forks, gently loosen the noodles and submerge them in the liquid. They'll start to soften immediately. Wait about 1 minute, then flip the noodles over and gently press them down so they're all moistened. Don't break them or stir aggressively. You're just coating them, not cooking them yet. This step ensures the noodles soak up flavor from the sauce rather than staying plain. What this feels like: The noodles will be slightly floppy but still mostly crunchy. That's exactly right. They'll continue to soften in the oven.

Pour the noodles and all the sauce into your casserole dish. Use your hands or a pair of tongs to spread them into a relatively even layer across the bottom. Don't worry about perfection. The noodles don't need to look neat. They're going to shift around anyway. Just make sure the sauce is distributed throughout so the noodles aren't clumping together. This takes about 2 minutes of gentle arranging.

Now comes the fun part—you get to arrange your vegetables like you're creating a work of art. Scatter your mushroom slices around the noodles. Add your carrot matchsticks. Distribute your broccoli florets so they're visible throughout the dish. Add your onion slices. Scatter your bok choy. Distribute your tofu cubes evenly. Here's the secret: you're not layering perfectly because everything is going to move and shift during baking. Just make sure every vegetable is touching the sauce at least a little bit. The vegetables near the edges will cook slightly faster, and vegetables in the center will cook slightly slower, but everything will finish at exactly the right time. This is actually why baked noodles are so forgiving for beginners—everything cooks together without you having to manage it.

Place your lid on the casserole dish. The lid traps steam, which softens the noodles and vegetables perfectly. If you don't have a lid, cover the dish tightly with aluminum foil. Slide the entire dish into your preheated oven. Set a timer for 20 minutes. This is when you can finally sit down. The oven is doing all the work now. You don't need to stir, flip, or check on anything. Just wait. When the timer goes off, carefully remove the dish from the oven using oven mitts. Be careful—it's hot and the steam is hot. Set it on your stovetop or a trivet.

Leave the lid on for 5 minutes. This resting period lets the heat distribute evenly and lets the noodles finish absorbing any remaining liquid. After 5 minutes, remove the lid carefully (steam is hot!). Using two forks or a tongs and spoon, gently toss everything together. The noodles should be tender but still have a slight chew to them. The vegetables should be soft. The sauce should be mostly absorbed. If there's still a lot of liquid in the bottom, don't worry—some will absorb as it cools. Sprinkle your green onion slices over the top and scatter your sesame seeds everywhere. If you taste a bite, add a tiny pinch more salt if it needs it. This is totally normal—everyone's oven runs differently and everyone's taste buds are different.