Tiny, sweet biscuit Baked golden brown, soft and warm Studded with dark gems

Dost thou crave a feast of layers bold, Where beef doth lie 'twixt bread of gold? Lettuce and cheese in harmony sing, A savory delight that peasants bring.

You stick your poles inside me. You tie me down to get me up. I get wet before you do. What am I?

I come in many shapes, with buttons and screens, I help you create, and fulfill your dreams. Though I may seem simple, I hold great power, What am I, that you use every hour?

Across and down my clues are pressed; Small squares wait while minds are tested. Words all meet where letters are shared.