  We present an approach to constructing broken Lefschetz fibrations (BLFs)
$f:X\rightarrow S^2$ from a handle decomposition of a 4-manifold $X$. Given a
handle decomposition as input these techniques yield explicit descriptions of
the BLFs, and do not rely on classification results from contact topology or
the choice of a generic indefinite function like some earlier approaches. We
show that this approach will always work in the case when $X$ is the double of
a 4-manifold with boundary, and compute explicit examples of BLFs on connected
sums of $S^2$-bundles.
