Cook asparagus in boiling salted water for 2 mins. Drain, then toss with a little olive oil. Heat a griddle pan to very hot, place the spears on the griddle and cook for a few mins, turning to get a nice charred effect all over. Meanwhile, melt a knob of butter in a pan. Divide the asparagus between 2 plates, season and top each pile with a drizzle of melted butter and toasted flaked almonds.