Yes, FRITTATAS is a Scrabble word!

Letter values in Scrabble US: F 4, R 1, I 1, T 1, T 1, A 1, T 1, A 1, S 1.

Is it a valid word?

FRITTATAS is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

Italian omelet with diced vegetables and meats; cooked until bottom is set then inverted into another pan to cook the top