Take your croissant and slice it in half, so you can use it to make a sandwich. A bread knife works great for slicing.
To a skillet over medium heat, add 1 Tbsp butter and let melt. Swirl the butter around so it coats the bottom of the pan.
Add the croissant halves to the pan, face down. Cook for 1-2 minutes, checking frequently until croissant is nicely browned but not burnt.
Once croissant is toasted, set it on a plate. Wipe out the bottom of the pan, if needed.
Take 2 eggs and crack them into a small bowl. Scramble them with a fork.
Add 1 Tbsp of butter to the skillet, letting it melt, and swirling it around. Once melted, add the eggs and cook, stirring frequently, until eggs are scrambled and cooked, about 2-3 minutes.