How did you make it Hun, because I cant stand smash on its own, but as a pizza its lovely!
I make mine:
Make up smash with boiled water and make to size you want. Make sure that the mash is quite stiff.
Turn oven on to highest setting. Spray a baking tray with frylight and then spread smash onto it to make a "base" make it thin though otherwise it will go soggy. Spray the top with more frylight and then whack in oven until top is crispy...turn over and cook other side.
Once cooked, either top with passata mixed with herbs and garlic, or baked beans (dont knock it until you try it!), then add topping. I like smoked bacon pieces, mushrooms, peppers, onion and sweetcorn and an allowance of cheese and sprinkle more garlic granules (I like garlic!).
Put back in oven and cook until cheese is golden and bubbling.