Detroit-Style Pizza With Sausage and Peppers

Ingredients For the dough: 2 1/4 teaspoons active dry yeast 1 1/2 cups warm water (110°F/45°C) 2 tablespoons olive oil 1 teaspoon salt 4 cups all-purpose flour For the toppings: 1 pound Italian sausage, removed from casing 1 red bell pepper, thinly sliced 1 green bell pepper, thinly sliced