In large mixer bowl, combine 3+1/2 cups flour, yeast, sugar and salt; mix well. Add warm water (120-130°F) and shortening to flour mixture. Blend at low speed until moistened, beat 3 minutes at medium speed. By hand, gradually stir in remaining flour to make a stiff batter. Cover; let rise in warm place until double, about 30 minutes.
Stir down batter. Spread in greased 9x5 or 8x4-inch bread pans. Cover; let rise in warm place until batter reaches top of pans, 20 to 30 minutes. Bake at 375°F for 35 to 40 minutes until golden brown. Remove from pans; brush with butter. Cool on wire rack.
*You can substitute Instant (fast-rising) Yeast in place of Active Dry Yeast in batter/no knead recipes. When using Instant Yeast, expect your batter/dough to rise about 50% faster. Adjust your rise times accordingly. Traditional methods: use equal amounts; Bread Machine: use 1/2 tsp Instant Yeast OR 3/4 tsp Active Dry Yeast per cup of flour in your recipe. Visit our Lessons in Yeast & Baking for more information on baking.