What is a nutritious, filling, and easy to eat breakfast for really early in the morning?

Oatmeal and yoghurt.
You can switch it up with fruits, nuts, syrups (like maple) etc.

My goto is:
Oatmeal, plain yoghurt (3.5%) or greek (10%), passion fruit, apple, maple syrup (if I like it sweet).

This will certainly fill you, has lots of vitamins and depending on how much and what you do is easy to eat.

Oatmeal. Pour in bowl with water/milk and nuke it for 3-4 min. Or you can do the whole overnight oats thing and have it ready with no prep in the morning.

Overnight oats which you can prepare the night before. Soak some oats in milk and keep it in the fridge for at least 2 hours for the oats to soak up all the liquids. Toss in your favourite toppings, like freshly chopped fruits, or even some chocolate, and it's ready to eat.

Overnight oats. Look up recipes, but you mix stuff together the night before and just eat it with a spoon out of the jar the next day. For optimizing the morning routine, nothing is simpler.

Banana. If still hungry then apple. If still hungry then banana. Repeat.

Fruits are good for you. Sugar in the morning and they hydrate you aswell. Might be a good idea to have a sandwich or something as a snack before lunch.

Oatmeal. You can customize it to what you need and your tastes. It just needs liquid for the oats and whatever additions you want to do. I use chia seeds and flax seeds for protein & fiber, and add frozen fruit and vanilla soy milk. Microwave and enjoy.

Peanut butter, dried fruit, honey, fresh fruit, etc. are all good choices

A serving each of full fat Greek yogurt, peanut butter, and chocolate protein powder all mixed up. It forms a mousse and is yummy. Takes a minute to make and a couple minutes to eat, lots of protein and fat so it keeps you going way longer than it should. I mix the PB into the yogurt first then mix in the protein, that helps it mix better.

1. Overnight oats
2. Yogurt with frozen fruit and granola (parfait)
3. Granola/protein bar of choice
4. Hard boiled eggs
5. Peanut butter toast

Is there an equivalent to eatcheapandhealthy here?

I usually eat reheated pizza early in the morning when I get home drunk.

I commute via boat. My standard is instant oatmeal w/ dried fruit in a mason jar with lid and a coozie.

I buy the oatmeal and dried fruit in bulk and prep a weeks worth at a time. The whole process takes less than 5 mins. While I'm getting ready for work I boil water and then pour it in just before leaving. By the time I load up on the boat it's cool enough to eat.

A bottle of Soylent contains 400 calories. It contains exactly 20% of each RDA-recognized vitamin, about 30 grams of carbs, a healthy balance of fats, and protein. Preparation is shaking the bottle for about three seconds, and peeling off a little foil seal.

Used to be you couldn’t drink it fast without getting digestion issues but now they’ve added enzymes to help digest the oats, so you can chug that bottle without issue.

A little more expensive than groceries you prepare, but cheaper than any buyable prepared breakfast you’d get from a coffee shop, diner, convenience store, or fast food joint.

Peanut butter and jelly. If you want to be a culinary genius, toast the bread.

Fil (fermented/soured milk) and musli in my opinion cannot be beaten. Get bowl, open fridge to get fil, pour fil into bowl, get muesli, add that and you are done. Pretty unprocessed, plenty of fiber and (depending on variety) lots of good bacteria. Cleaning up is also quick, water and a few swirls with the brush. Making coffee takes longer than chomping down on a bowl of fil and muesli.

Overnight oats. There's a ton of different ways to prep it for however you want it and whatever your nutritional needs are.

NO PREP: A couple slices of smoked salmon. A few cherry tomatoes. Another fruit of your choice (apple, orange, berries, etc.)

Substitute similar things for variety: Smoked mackrel, whitefish, trout, or herring. Vegetables like cauliflower, broccoli or snap peas instead of cherry tomatoes. Fish not your thing (too bad cause it's VERY healthy) then eat sliced meats. Leaner is healthier.

https://en.wikipedia.org/wiki/Smokedfish

ANOTHER LOW PREP OPTION: Charcuterie board. Make it in a big glass storage container and keep it in the fridge so all you have to do is take it out. Graze. Put it back. These can have almost endless foods on them, but choose wisely. No candy, Nancy! Eat some nuts.

https://duckduckgo.com/?q=Charcuterie+board&t=ffab&ia=recipes

For years I ate cereal with milk and was still hungry. Stop being a removed and putting sugar on your sugar and eat real food.

My go to is plain Greek yogurt and a handful of raspberries or strawberries. And throw in some oats or granola to change it up

Bircher muesli, it's basically oats soaked in milk overnight. Can be prepared weeks in advance (in dry form) and takes seconds to prepare the night before.

Müesli

Scoop of protein powder, banana, handful of peanuts, shake of cocoa powder, 1/3rd cup oats, handful of berries, and coffee in a blender.

Do you find you have no appetite in the morning?

I have this problem and find that Greek yogurt cups and black tea help.

Alternatively, the "BRAT" diet is meant for someone with a queasy stomach from being ill but also works in this case: Banana, Rice, Applesauce, Toast.

My standard breakfast (for years) is: 1 hard boiled egg, a large spoonful of cottage cheese, and some fruit (usually a small banana or a mandarin orange). Assuming you hard boiled the eggs in advance, the prep time is however long it takes you to peel an egg.

Granola with yogurt.

I get a fairly low-sugar granola, or make my own (see 'food wishes - granola' on YT) and portion it into tupperware containers, 1/2 cup each. Then I put on 1/2 cup greek yogurt (the real kind, not the sugar-loaded kind) and freeze like 10 of them at a time. In the morning, i take one, add 1/2 cup oat milk, maybe some extra dry or frozen fruit, and by the time i get to work, its defrosted but still cold, mushy but still crunchy. Should be relatively low in bad sugars and pretty tasty.

When I am running late I often make scrambled egg burritos. Warm a burrito tortilla over the stove flame, then scramble eggs with cheese and seasoning. I like egg whites, pepper, and cajun seasoning.

Can cook on a high flame if stirring constantly. Roll it up and run. It takes 3-4 minutes. Usually grab an apple and banana to go with it.

Well, I’m Dutch. So sandwiches. Put something tasty on them and you’re done in a whim.

Way too many comments for me to reply to but thanks all for the suggestions!

Sorry, I only have the filling, easy to eat, and no prep parts to give you. I'm no health expert, just a lazy Lemming.

Normally my daily routine is a bowl of Cereal with milk. I have a banana sometimes with it. Zero prep.

If I need to count on having energy for the whole day, it's an over easy egg on buttered toast with margarine and black pepper. Some prep required.

My unhealthy "dinner for a week" meal is a pack of Costco hotdog buns and sausages that I cook two at a time whenever I want and slap mustard on it. That's 8 or so meals for just over $20.

I could cook more and better stuff but I'm just too lazy to do the prep, the cooking and the cleanup, but I'm also too cheap to do takeout more than once a week.

Hardboiled eggs are pretty minimal actual work, but take time. I can't eat much really early, but those I can.

Oat meal

I like to make oats in the microwave and mix in peanut butter and banana slices

Been doin 2 bananas with jar of peanuts. Bite of banana, pour in a few peanuts, eat together.

Somehow I never liked breakfast, as a kid I'd try to avoid it if possible.

Over the last couple of years I pushed it even further and most of the time I only eat dinner.

Steel-cut oatmeal is super-easy, set-and-forget (1 cup water, 1/4 steel-cut oats, pinch of salt, Bring water to boil, stir in oats, salt, lower to bare simmer, uncovered 30 minutes, flavor as desired, eat).

But that can get boring. For something a little more exciting, super-nutritious, and almost zero-prep, do a sort of Norwegian-style open-face cracker (no, you don't need "the tubes", but if you can find them, knock yourself out). For this I take a tin of fish (usually smoked salmon or trout, but sardines, mackerel, or even tuna would work fine), a piece of cracking toast or a Scandy flatbread cracker (Wasa, knekkebrod), and some kind of "schmear" (a thin spread of cream cheese, sour cream, yogurt, or - my favorite - Trader Joe's Everything But the Bagel Yogurt Dip/Spread). I can get all these ingredients both cheaply and well-made at Trader Joe's (TJ Smoked Salmon in a tin, TJ Norwegian seeded flatbread, and the aforementioned dip). For a little additional oomph toss on tomato or cucumber slices.

I open a can of sardines and slice open an avocado. Healthy fats and protein, low carb!

Wrap sweet potatoes in foil and roast them in the oven over night. In the morning, grab a sweet potato out of the oven and eat it for breakfast.

This is probably the easiest and most nutritious meal possible.

Oatmeal and one or two hard boiled eggs. It will satisfy your hunger so you don’t over eat and very healthy.

Miso soup is my go-to breakfast. You can get dashi powder and miso paste, then just heat water in the kettle and combine. I love that it’s warm and flavorful, but actually a pretty light breakfast (which I prefer).

So much prep going on in these comments.

Half a bowl of Shreddies, half of Swiss Muesli, milk. Tea if you have time, juice if not.

Diet Coke.

Protein shake.

Unless there are dinner leftovers, I usually eat a corn farofa filled with two scrambled eggs, half onion, and a carrot. It's 10min cooking if you plan in advance (grate the carrot and chop the onion), really filling, and... well, you got two vegs and a grain and a source of protein, I'd say that it's nutritious.

Cottage cheese with granola. Similar to yogurt but I think cottage cheese is more palatable. The low fat version (often 1% or 2% instead of whole/ full fat) doesn't have as strong a taste to me and is covered pretty easily by granola if you don't like the flavor of cottage cheese. I also recommend store brand for the same reason—the taste is less strong, it seem, than name brand. For example, I think Daisy cottage cheese tastes a lot like their sour cream and just doesn't work as well as whatever store brand is available (and often cheaper) right next to it.

Sometimes I add a little jam or something too, which is also good

Chia seed pudding is super simple to do. Put 3-4 tablespoons of chia and one cup of liquid (e.g. milk) in a jar, throw it in the fridge and let it sit overnight. Add some fruit to it in the morning if you want flavor. It is basically flavorless if you don't.

Microwave oatmeal but with so much water that it's drinkable. Have a pint of that and your body will thank you tremendously.

I always have a bowl of full-fat Greek yogurt with a spoonful of almond butter, a sprinkle of cinnamon, some collagen powder, and a little bit of maple syrup. Easy to scarf down in a hurry and keeps me satisfied for a few hours.

I make pork and vege wontons and freeze them in the deep freeze in packets. When I don't want to eat in the morning, I put a packet in the steamer and have a shower. When I get out on the shower alarm, I have hot cooked dumplings to eat. It is good even at 430AM.

But if you want no prep, not even the ease of a steamer, then stewed fruit from the fridge or a can, mixed with yoghurt and some nuts (or nut flour) and a handful of dry uncooked rolled oats. It takes zero time, and is good quality, and can change with the seasons.

I make steel cut oats in a rice cooker with a timer, so I can put the oats and water in the night before. I've pre-mixed the spices, peanut powder, flax powder. I throw nuts and raisins in when I mix it all together in the morning. For spices it's cocoa, tiny bit of cloves, tiny bit of cinnamon, tiny bit of ginger, pinch of salt.

Breakfast burritos: Scramble up some eggs and whatever you've got, toss it on a tortilla, throw some cheese and salsa on and you've got a hearty, easily transported meal that's relatively easy to make.

Oatmeal: Make your oats, toss in nuts, berries, whatever: Yum!

Sausages: I just stick them on a baking sheet, bake for 10 minutes at 400F, flip, 10 more minutes, and they're good to go. Save even more time by precooking them, storing them in the fridge, and microwaving them on the fly. Add some toast and guac, maybe a piece of fruit, and you've got some decent nutrition.

Breakfast shakes: Lots of nutrients and little to no prep time. Not super filling but enough to get you through at least the first few hours of the day.

Bread, butter, cheese and cold cuts.

An apple