  We study a simple dark matter model given by two interacting real singlet
scalars, with only one of them coupled to the Higgs. The model therefore
presents a minimal assisted-freeze-out framework: both scalars contribute to
the dark matter relic density, but only one of them takes part in the elastic
scattering with nuclei. This reduces the expected interaction rate in direct
detection experiments, in such a way that the model in some regions of the
parameter space may evades XENON1T constraints. We explore the model under
theoretical (perturbativity, stability potential and unitarity) and
experimental constraints (Higgs to invisible, relic density, direct detection),
with precise approximations near the Higgs resonance to calculate the averaged
annihilation cross section. We show that the model is viable in the Higgs
resonance region and for scalar singlet masses of hundreds of GeV.
