I would like some recipes for sweet high-protein breakfast, without peanut butter or yogurt.

Cream of wheat is my favorite sweet but healthy breakfast. You can add milk (almond milk) or water, a couple blueberries, bananas, apples whatever fruit you're feeling, and some brown sugar.
If you're looking for extra sweetness, a single Hershey kiss melts perfectly and taste delicious with blueberries

I always make a morning shake with raw spinach (you can't taste it), almond milk and vanilla naked pea protein. Sometimes i add a bit of Pyure sweetener, cause naked pea is totally naked, nothing but pea😊

I have a chocolate protein shake each morning. I combine cold coffee, unsweetened almond milk, and a scoop and a half of chocolate protein powder.

You could make a smoothie with cashew butter or almond butter (about 2 1/2 Tbs) and bananas and strawberries and sweeten it with 1 1/2Tbs blackstrap molasses, and add 2Tbs flax seeds for extra health benefits. For busy days you could freeze it and eat it like a popsicle. You can search online for a granola recipe that uses apple juice as sweetener and make this in advance and have granola with fresh fruit in the morning, adding blueberries, raspberries, bananas and almonds, and it is OK to use frozen fruit, it thaws quickly. In the winter though, it can be very nice to have hot oatmeal but try the old fashioned rolled oats, they really don't take long, and add cinnamon, raisins and almonds or walnuts, or maybe fresh apple slices, and try sweetening with honey or real maple syrup or molasses. If you are ready to be really adventurous and move away from sweets get some fresh spinach and mushrooms , put a handful in a pan with a little water and cook it and poach some eggs and serve the eggs on top of the spinach and mushrooms with some soy sauce. If you poach the eggs in a broth they are extra yummy. I hope this helps! I believe in you!

Here are some that I found!
-cottage cheese and berries
-quinoa or oats: can add chia seeds, fruits, nuts, sweeten with honey
-toast or bagel with cottage cheese and cinnamon and honey
-smoothies with fruit, nuts or nut butter, tofu, or protein powder
-here are some more smoothie recipes (some of them have peanut butter or yogurt but plenty have other ingredients): https://www.google.com/amp/s/www.ajc.com/lifestyles/health/surprisingly-delicious-high-protein-smoothie-recipes/KHEPJc2aAY635rPb8i18OJ/amp.html

Oatmeal with milk and nuts. Also, you can go for wholemeal sandwiches with chicken/turkey slices and cheers. And of course, there is also Greek yoghurt.

A smoothie made using pea protein. High protein with minimal carbs. Can buy a HUGE container from Amazon for reasonable price. Can add your choice of fruits and Stevia to make it sweet. Would stick to the lower glycemic fruits such as berries. Can also add some vanilla. Can make with water (we all need more water!). Also can make a few of these ahead to make morning routine “smoother” (pun intended). I love using my single serving blender (I have Oster) so the mess is all in the travel cup you use to drink it. I like adding Vital Reds or a powder full of green stuff.

I like to have oatmeal with almond milk instead of water for breakfast. If you add slivered almonds or pumpkin seeds it makes it a high protein meal.