PPH a tagine is dead easy - its just a casserole really! recipie for lamb tagine
But your lamb fillets sound nice as well. Like your idea for desert. The starter doesn't sound quite right though - a mixture of too many different things. Have just found the MOMO lunch menu in case there is any ideas you like there!
What about stuffed peppers?
Mezze (Mechouia, Zaalouck, Bourek of Chicken and Briout of cod)
Chilled tomato soup with coriander
Gambas k'taffe, salmon mousse and chive oil
Piquillos peppers stuffed with salted haddock, served with ratatouille
Marinated salmon with coriander, ricotta and pink peppercorn
main
Pan fried marinated cod, vegetables 'Tian' and three peppers dressing
Saddle of lamb, baby vegetable and thyme jus
Roasted duck breast, sweet potato and grapes
Tagine of chicken and purple olives and Jerusalem artichokes
Tagine of baby vegetables and wild mushrooms
Couscous with marinated spiced lamb skewers
Marinated spiced chicken breast couscous
Vegetarian couscous
dessert
Quince tart tatin, 'tahine' flavoured ice-cream
Home made sorbet
Selection of Maghrebi pastries
Fresh red berries soup with hibiscus and vanilla ice-cream