Add the flour and sugar to a glass mixing bowl. Do not use metal.
Prepare two one-quart glass baking dishes or one 1.5 quart glass baking dish by spraying with non-stick cooking spray. (The shape does not matter, I like the look of the round loaf).
Pop the top on your room temperature beer, and pour it over the flour. The beer is your bread yeast! Use a wooden spoon to stir until you have no lumps of flour or sugar. Dough will be very sticky and somewhat lumpy. That's okay, as it adds to the finished texture.
Divide the beer bread dough in half and place each into one of the two prepared baking dishes. Cover the batter (I use the glass lids that go with my bowls. If you don't have lids, you may use plastic wrap).
Let the beer bread batter rise for about 30 minutes; it will roughly double in size.
Preheat your oven to 350 as the bread leavens.
After rising, bake the bread for 30 minutes at 350. Set a timer. At the 30-minute "ding," crank the heat up to 400 for the last ten minutes.
Your bread will become light brown and the crust will crack a bit as steam escapes during baking. That's normal.
Remove your bread, cool, and enjoy! You have successfully baked bread without any separate yeast purchase.