All these ingredients only cost €5. I got milk, eggs, mushrooms, an onion, lardon (like bacon pieces), and dough. It's basically a "Quiche Lorrane" without cheese. I would normally make my own crust but I'm vacation, I'm lazy.
I used all 6 eggs, around a 1/4 cup of milk, two medium mushrooms, a small onion, and the entire pack of lardon. I sauteed the onions a bit then added the lardon, then the mushrooms. I put the dough in the baking pan and placed the cooked ingredients on top. After beating the eggs I added them into the baking pan, mixed gently and baked it for about 25-30 minutes at 220 Celsius.