Yes! You can make this delicious (and nutritious) breakfast at home. The original, named Bircher Muesli after the Swiss Dr. Bircher who developed it, is different than what you buy in the box (packaged by the Swiss food company Familia.) I learned how to make muesli from the Swiss pastry chef I apprenticed under many years ago.
Here is the basic formula:
Bircher Muesli
2 cups rolled oats (quick cooking organic is best, but Quaker Old Fashioned oats work just right too.)
2 cups milk (I use 1%, but any is fine)
2 1/2 cups peeled, coarsely grated apples
2 tablespoons plain yogurt
Stir all ingredients together; cover and refrigerate overnight. Enjoy the next morning. I like it cold, because the grated apples add a little crunch, but many also pop it in the microwave to heat it up a little. It's yummy either way.
There are thousands of ways to vary this recipe and build different flavor profiles. I often top mine with sliced strawberries and toasted, sliced almonds.
You may also want to stir in a little orange zest and freshly grated nutmeg.
Orange segments, halved grapes, fresh berries, sliced bananas, chopped walnuts, cinnamon, honey, maple syrup, vanilla, cottage cheese, creme fraiche, fruit preserves, Nutella, peanut butter are all good stir-ins or toppings.
This recipe was developed by Dr. Bircher, a Swiss surgeon, originally as the best type of food to serve people recovering from surgery or severe illness. Its easy digestability, balanced protiens, carbs with low glycemic index, high fiber and active cultures make it a perfect food--not to mention how delicious it is. Like I said, it's very different from the dry cereal sold in a box, but try this one, you'll find it superlative.